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Finding the Fourth Proportional to 10,861.17, 14,990.02 and 6,882.65

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Solution

The fourth proportional to 10,861.17, 14,990.02 and 6,882.65 is: 9,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.17 : 14,990.02 = 6,882.65 : x
  2. Step 2: Convert to fraction form
    10,861.17/14,990.02 = 6,882.65/x
  3. Step 3: Cross multiply
    10,861.17x = 14,990.02 × 6,882.65
  4. Step 4: Simplify right side
    10,861.17x = 103,171,061.15
  5. Step 5: Solve for x
    x = 103,171,061.15/10,861.17
  6. Step 6: Final answer
    x = 9,499.07

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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.