Home / 39,385.44-54,350.19-21,479.99

Finding the Fourth Proportional to 39,385.44, 54,350.19 and 21,479.99

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Solution

The fourth proportional to 39,385.44, 54,350.19 and 21,479.99 is: 29,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.44 : 54,350.19 = 21,479.99 : x
  2. Step 2: Convert to fraction form
    39,385.44/54,350.19 = 21,479.99/x
  3. Step 3: Cross multiply
    39,385.44x = 54,350.19 × 21,479.99
  4. Step 4: Simplify right side
    39,385.44x = 1,167,441,265.95
  5. Step 5: Solve for x
    x = 1,167,441,265.95/39,385.44
  6. Step 6: Final answer
    x = 29,641.44

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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.