Home / 13,590.92-20,385.47-3,729.38

Finding the Fourth Proportional to 13,590.92, 20,385.47 and 3,729.38

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Solution

The fourth proportional to 13,590.92, 20,385.47 and 3,729.38 is: 5,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.92 : 20,385.47 = 3,729.38 : x
  2. Step 2: Convert to fraction form
    13,590.92/20,385.47 = 3,729.38/x
  3. Step 3: Cross multiply
    13,590.92x = 20,385.47 × 3,729.38
  4. Step 4: Simplify right side
    13,590.92x = 76,025,071.50
  5. Step 5: Solve for x
    x = 76,025,071.50/13,590.92
  6. Step 6: Final answer
    x = 5,593.81

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1.5x scale

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.