Home / 39,402.87-54,375.82-21,497.75

Finding the Fourth Proportional to 39,402.87, 54,375.82 and 21,497.75

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Solution

The fourth proportional to 39,402.87, 54,375.82 and 21,497.75 is: 29,666.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,402.87 : 54,375.82 = 21,497.75 : x
  2. Step 2: Convert to fraction form
    39,402.87/54,375.82 = 21,497.75/x
  3. Step 3: Cross multiply
    39,402.87x = 54,375.82 × 21,497.75
  4. Step 4: Simplify right side
    39,402.87x = 1,168,957,784.41
  5. Step 5: Solve for x
    x = 1,168,957,784.41/39,402.87
  6. Step 6: Final answer
    x = 29,666.82

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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.