Home / 12,386-18,581.88-8,917.04

Finding the Fourth Proportional to 12,386, 18,581.88 and 8,917.04

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Solution

The fourth proportional to 12,386, 18,581.88 and 8,917.04 is: 13,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386 : 18,581.88 = 8,917.04 : x
  2. Step 2: Convert to fraction form
    12,386/18,581.88 = 8,917.04/x
  3. Step 3: Cross multiply
    12,386x = 18,581.88 × 8,917.04
  4. Step 4: Simplify right side
    12,386x = 165,695,367.24
  5. Step 5: Solve for x
    x = 165,695,367.24/12,386
  6. Step 6: Final answer
    x = 13,377.63

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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.