Home / 39,686.18-59,487.87-13,381.88

Finding the Fourth Proportional to 39,686.18, 59,487.87 and 13,381.88

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Solution

The fourth proportional to 39,686.18, 59,487.87 and 13,381.88 is: 20,058.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,686.18 : 59,487.87 = 13,381.88 : x
  2. Step 2: Convert to fraction form
    39,686.18/59,487.87 = 13,381.88/x
  3. Step 3: Cross multiply
    39,686.18x = 59,487.87 × 13,381.88
  4. Step 4: Simplify right side
    39,686.18x = 796,059,537.80
  5. Step 5: Solve for x
    x = 796,059,537.80/39,686.18
  6. Step 6: Final answer
    x = 20,058.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.