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Finding the Fourth Proportional to 18,658.08, 28,006.56 and 8,277.12

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Solution

The fourth proportional to 18,658.08, 28,006.56 and 8,277.12 is: 12,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.08 : 28,006.56 = 8,277.12 : x
  2. Step 2: Convert to fraction form
    18,658.08/28,006.56 = 8,277.12/x
  3. Step 3: Cross multiply
    18,658.08x = 28,006.56 × 8,277.12
  4. Step 4: Simplify right side
    18,658.08x = 231,813,657.91
  5. Step 5: Solve for x
    x = 231,813,657.91/18,658.08
  6. Step 6: Final answer
    x = 12,424.30

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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.