Home / 39,447.95-54,437.80-21,542.90

Finding the Fourth Proportional to 39,447.95, 54,437.80 and 21,542.90

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Solution

The fourth proportional to 39,447.95, 54,437.80 and 21,542.90 is: 29,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.95 : 54,437.80 = 21,542.90 : x
  2. Step 2: Convert to fraction form
    39,447.95/54,437.80 = 21,542.90/x
  3. Step 3: Cross multiply
    39,447.95x = 54,437.80 × 21,542.90
  4. Step 4: Simplify right side
    39,447.95x = 1,172,747,755.57
  5. Step 5: Solve for x
    x = 1,172,747,755.57/39,447.95
  6. Step 6: Final answer
    x = 29,728.99

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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.