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Finding the Fourth Proportional to 12,074.61, 18,114.89 and 9,755.65

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Solution

The fourth proportional to 12,074.61, 18,114.89 and 9,755.65 is: 14,635.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074.61 : 18,114.89 = 9,755.65 : x
  2. Step 2: Convert to fraction form
    12,074.61/18,114.89 = 9,755.65/x
  3. Step 3: Cross multiply
    12,074.61x = 18,114.89 × 9,755.65
  4. Step 4: Simplify right side
    12,074.61x = 176,722,526.63
  5. Step 5: Solve for x
    x = 176,722,526.63/12,074.61
  6. Step 6: Final answer
    x = 14,635.88

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1.5x scale

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.