Home / 21,010.68-29,022.36-15,696.27

Finding the Fourth Proportional to 21,010.68, 29,022.36 and 15,696.27

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Solution

The fourth proportional to 21,010.68, 29,022.36 and 15,696.27 is: 21,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.68 : 29,022.36 = 15,696.27 : x
  2. Step 2: Convert to fraction form
    21,010.68/29,022.36 = 15,696.27/x
  3. Step 3: Cross multiply
    21,010.68x = 29,022.36 × 15,696.27
  4. Step 4: Simplify right side
    21,010.68x = 455,542,798.60
  5. Step 5: Solve for x
    x = 455,542,798.60/21,010.68
  6. Step 6: Final answer
    x = 21,681.49

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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.