Home / 13,981.38-19,294.08-8,318.88

Finding the Fourth Proportional to 13,981.38, 19,294.08 and 8,318.88

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Solution

The fourth proportional to 13,981.38, 19,294.08 and 8,318.88 is: 11,479.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.38 : 19,294.08 = 8,318.88 : x
  2. Step 2: Convert to fraction form
    13,981.38/19,294.08 = 8,318.88/x
  3. Step 3: Cross multiply
    13,981.38x = 19,294.08 × 8,318.88
  4. Step 4: Simplify right side
    13,981.38x = 160,505,136.23
  5. Step 5: Solve for x
    x = 160,505,136.23/13,981.38
  6. Step 6: Final answer
    x = 11,479.92

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Similar ratio
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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.