Home / 39,402.27-54,375-21,497.28

Finding the Fourth Proportional to 39,402.27, 54,375 and 21,497.28

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Solution

The fourth proportional to 39,402.27, 54,375 and 21,497.28 is: 29,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,402.27 : 54,375 = 21,497.28 : x
  2. Step 2: Convert to fraction form
    39,402.27/54,375 = 21,497.28/x
  3. Step 3: Cross multiply
    39,402.27x = 54,375 × 21,497.28
  4. Step 4: Simplify right side
    39,402.27x = 1,168,914,600
  5. Step 5: Solve for x
    x = 1,168,914,600/39,402.27
  6. Step 6: Final answer
    x = 29,666.17

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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.