Home / 39,385.80-54,352.08-21,481.29

Finding the Fourth Proportional to 39,385.80, 54,352.08 and 21,481.29

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Solution

The fourth proportional to 39,385.80, 54,352.08 and 21,481.29 is: 29,644.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.80 : 54,352.08 = 21,481.29 : x
  2. Step 2: Convert to fraction form
    39,385.80/54,352.08 = 21,481.29/x
  3. Step 3: Cross multiply
    39,385.80x = 54,352.08 × 21,481.29
  4. Step 4: Simplify right side
    39,385.80x = 1,167,552,792.58
  5. Step 5: Solve for x
    x = 1,167,552,792.58/39,385.80
  6. Step 6: Final answer
    x = 29,644.00

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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.