Home / 21,122.47-29,203.74-20,193.00

Finding the Fourth Proportional to 21,122.47, 29,203.74 and 20,193.00

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Solution

The fourth proportional to 21,122.47, 29,203.74 and 20,193.00 is: 27,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.47 : 29,203.74 = 20,193.00 : x
  2. Step 2: Convert to fraction form
    21,122.47/29,203.74 = 20,193.00/x
  3. Step 3: Cross multiply
    21,122.47x = 29,203.74 × 20,193.00
  4. Step 4: Simplify right side
    21,122.47x = 589,711,012.31
  5. Step 5: Solve for x
    x = 589,711,012.31/21,122.47
  6. Step 6: Final answer
    x = 27,918.66

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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.