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Finding the Fourth Proportional to 12,079.68, 16,679.88 and 7,610.64

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Solution

The fourth proportional to 12,079.68, 16,679.88 and 7,610.64 is: 10,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.68 : 16,679.88 = 7,610.64 : x
  2. Step 2: Convert to fraction form
    12,079.68/16,679.88 = 7,610.64/x
  3. Step 3: Cross multiply
    12,079.68x = 16,679.88 × 7,610.64
  4. Step 4: Simplify right side
    12,079.68x = 126,944,561.92
  5. Step 5: Solve for x
    x = 126,944,561.92/12,079.68
  6. Step 6: Final answer
    x = 10,508.93

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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.