Home / 12,545.32-18,806.46-6,387.88

Finding the Fourth Proportional to 12,545.32, 18,806.46 and 6,387.88

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Solution

The fourth proportional to 12,545.32, 18,806.46 and 6,387.88 is: 9,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.32 : 18,806.46 = 6,387.88 : x
  2. Step 2: Convert to fraction form
    12,545.32/18,806.46 = 6,387.88/x
  3. Step 3: Cross multiply
    12,545.32x = 18,806.46 × 6,387.88
  4. Step 4: Simplify right side
    12,545.32x = 120,133,409.70
  5. Step 5: Solve for x
    x = 120,133,409.70/12,545.32
  6. Step 6: Final answer
    x = 9,575.95

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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.