Home / 43,321.62-64,981.91-13,739.71

Finding the Fourth Proportional to 43,321.62, 64,981.91 and 13,739.71

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Solution

The fourth proportional to 43,321.62, 64,981.91 and 13,739.71 is: 20,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,321.62 : 64,981.91 = 13,739.71 : x
  2. Step 2: Convert to fraction form
    43,321.62/64,981.91 = 13,739.71/x
  3. Step 3: Cross multiply
    43,321.62x = 64,981.91 × 13,739.71
  4. Step 4: Simplify right side
    43,321.62x = 892,832,592.38
  5. Step 5: Solve for x
    x = 892,832,592.38/43,321.62
  6. Step 6: Final answer
    x = 20,609.40

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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.