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Finding the Fourth Proportional to 11,545.81, 15,932.89 and 6,509.99

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Solution

The fourth proportional to 11,545.81, 15,932.89 and 6,509.99 is: 8,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,545.81 : 15,932.89 = 6,509.99 : x
  2. Step 2: Convert to fraction form
    11,545.81/15,932.89 = 6,509.99/x
  3. Step 3: Cross multiply
    11,545.81x = 15,932.89 × 6,509.99
  4. Step 4: Simplify right side
    11,545.81x = 103,722,874.91
  5. Step 5: Solve for x
    x = 103,722,874.91/11,545.81
  6. Step 6: Final answer
    x = 8,983.60

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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.