Home / 21,553.68-29,762.76-15,898.23

Finding the Fourth Proportional to 21,553.68, 29,762.76 and 15,898.23

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Solution

The fourth proportional to 21,553.68, 29,762.76 and 15,898.23 is: 21,953.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.68 : 29,762.76 = 15,898.23 : x
  2. Step 2: Convert to fraction form
    21,553.68/29,762.76 = 15,898.23/x
  3. Step 3: Cross multiply
    21,553.68x = 29,762.76 × 15,898.23
  4. Step 4: Simplify right side
    21,553.68x = 473,175,203.91
  5. Step 5: Solve for x
    x = 473,175,203.91/21,553.68
  6. Step 6: Final answer
    x = 21,953.34

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Find fourth proportional to 10,776.84, 14,881.38 and 7,949.12
Half scale
Find fourth proportional to 43,107.36, 59,525.52 and 31,796.46
Double scale
Find fourth proportional to 21,554.68, 29,764.14 and 15,899.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.