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Finding the Fourth Proportional to 11,695.40, 17,545.20 and 6,147.20

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Solution

The fourth proportional to 11,695.40, 17,545.20 and 6,147.20 is: 9,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.40 : 17,545.20 = 6,147.20 : x
  2. Step 2: Convert to fraction form
    11,695.40/17,545.20 = 6,147.20/x
  3. Step 3: Cross multiply
    11,695.40x = 17,545.20 × 6,147.20
  4. Step 4: Simplify right side
    11,695.40x = 107,853,853.44
  5. Step 5: Solve for x
    x = 107,853,853.44/11,695.40
  6. Step 6: Final answer
    x = 9,221.90

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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.