Home / 13,687.57-20,531.91-4,327.77

Finding the Fourth Proportional to 13,687.57, 20,531.91 and 4,327.77

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Solution

The fourth proportional to 13,687.57, 20,531.91 and 4,327.77 is: 6,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.57 : 20,531.91 = 4,327.77 : x
  2. Step 2: Convert to fraction form
    13,687.57/20,531.91 = 4,327.77/x
  3. Step 3: Cross multiply
    13,687.57x = 20,531.91 × 4,327.77
  4. Step 4: Simplify right side
    13,687.57x = 88,857,384.14
  5. Step 5: Solve for x
    x = 88,857,384.14/13,687.57
  6. Step 6: Final answer
    x = 6,491.83

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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.