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Finding the Fourth Proportional to 12,910.92, 17,812.61 and 7,244.88

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Solution

The fourth proportional to 12,910.92, 17,812.61 and 7,244.88 is: 9,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.92 : 17,812.61 = 7,244.88 : x
  2. Step 2: Convert to fraction form
    12,910.92/17,812.61 = 7,244.88/x
  3. Step 3: Cross multiply
    12,910.92x = 17,812.61 × 7,244.88
  4. Step 4: Simplify right side
    12,910.92x = 129,050,287.03
  5. Step 5: Solve for x
    x = 129,050,287.03/12,910.92
  6. Step 6: Final answer
    x = 9,995.44

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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.