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Finding the Fourth Proportional to 13,379.13, 18,463.86 and 8,073.86

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Solution

The fourth proportional to 13,379.13, 18,463.86 and 8,073.86 is: 11,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.13 : 18,463.86 = 8,073.86 : x
  2. Step 2: Convert to fraction form
    13,379.13/18,463.86 = 8,073.86/x
  3. Step 3: Cross multiply
    13,379.13x = 18,463.86 × 8,073.86
  4. Step 4: Simplify right side
    13,379.13x = 149,074,528.38
  5. Step 5: Solve for x
    x = 149,074,528.38/13,379.13
  6. Step 6: Final answer
    x = 11,142.32

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1.5x scale

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.