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Finding the Fourth Proportional to 12,472.66, 18,709.08 and 8,565.22

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Solution

The fourth proportional to 12,472.66, 18,709.08 and 8,565.22 is: 12,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.66 : 18,709.08 = 8,565.22 : x
  2. Step 2: Convert to fraction form
    12,472.66/18,709.08 = 8,565.22/x
  3. Step 3: Cross multiply
    12,472.66x = 18,709.08 × 8,565.22
  4. Step 4: Simplify right side
    12,472.66x = 160,247,386.20
  5. Step 5: Solve for x
    x = 160,247,386.20/12,472.66
  6. Step 6: Final answer
    x = 12,847.89

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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.