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Finding the Fourth Proportional to 12,482.85, 18,729.72 and 6,632.61

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Solution

The fourth proportional to 12,482.85, 18,729.72 and 6,632.61 is: 9,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.85 : 18,729.72 = 6,632.61 : x
  2. Step 2: Convert to fraction form
    12,482.85/18,729.72 = 6,632.61/x
  3. Step 3: Cross multiply
    12,482.85x = 18,729.72 × 6,632.61
  4. Step 4: Simplify right side
    12,482.85x = 124,226,928.17
  5. Step 5: Solve for x
    x = 124,226,928.17/12,482.85
  6. Step 6: Final answer
    x = 9,951.81

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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.