Home / 12,747.08-17,591.30-8,272.68

Finding the Fourth Proportional to 12,747.08, 17,591.30 and 8,272.68

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Solution

The fourth proportional to 12,747.08, 17,591.30 and 8,272.68 is: 11,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.08 : 17,591.30 = 8,272.68 : x
  2. Step 2: Convert to fraction form
    12,747.08/17,591.30 = 8,272.68/x
  3. Step 3: Cross multiply
    12,747.08x = 17,591.30 × 8,272.68
  4. Step 4: Simplify right side
    12,747.08x = 145,527,195.68
  5. Step 5: Solve for x
    x = 145,527,195.68/12,747.08
  6. Step 6: Final answer
    x = 11,416.51

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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.