Home / 39,294.13-54,227.13-21,390.33

Finding the Fourth Proportional to 39,294.13, 54,227.13 and 21,390.33

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Solution

The fourth proportional to 39,294.13, 54,227.13 and 21,390.33 is: 29,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,294.13 : 54,227.13 = 21,390.33 : x
  2. Step 2: Convert to fraction form
    39,294.13/54,227.13 = 21,390.33/x
  3. Step 3: Cross multiply
    39,294.13x = 54,227.13 × 21,390.33
  4. Step 4: Simplify right side
    39,294.13x = 1,159,936,098.70
  5. Step 5: Solve for x
    x = 1,159,936,098.70/39,294.13
  6. Step 6: Final answer
    x = 29,519.32

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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.