Home / 39,385.30-54,352.41-21,480.96

Finding the Fourth Proportional to 39,385.30, 54,352.41 and 21,480.96

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Solution

The fourth proportional to 39,385.30, 54,352.41 and 21,480.96 is: 29,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.30 : 54,352.41 = 21,480.96 : x
  2. Step 2: Convert to fraction form
    39,385.30/54,352.41 = 21,480.96/x
  3. Step 3: Cross multiply
    39,385.30x = 54,352.41 × 21,480.96
  4. Step 4: Simplify right side
    39,385.30x = 1,167,541,945.11
  5. Step 5: Solve for x
    x = 1,167,541,945.11/39,385.30
  6. Step 6: Final answer
    x = 29,644.10

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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.