Home / 39,359.28-54,314.40-21,453.90

Finding the Fourth Proportional to 39,359.28, 54,314.40 and 21,453.90

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Solution

The fourth proportional to 39,359.28, 54,314.40 and 21,453.90 is: 29,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.28 : 54,314.40 = 21,453.90 : x
  2. Step 2: Convert to fraction form
    39,359.28/54,314.40 = 21,453.90/x
  3. Step 3: Cross multiply
    39,359.28x = 54,314.40 × 21,453.90
  4. Step 4: Simplify right side
    39,359.28x = 1,165,255,706.16
  5. Step 5: Solve for x
    x = 1,165,255,706.16/39,359.28
  6. Step 6: Final answer
    x = 29,605.62

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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.