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Finding the Fourth Proportional to 10,908, 15,053.20 and 5,940

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Solution

The fourth proportional to 10,908, 15,053.20 and 5,940 is: 8,197.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908 : 15,053.20 = 5,940 : x
  2. Step 2: Convert to fraction form
    10,908/15,053.20 = 5,940/x
  3. Step 3: Cross multiply
    10,908x = 15,053.20 × 5,940
  4. Step 4: Simplify right side
    10,908x = 89,416,008
  5. Step 5: Solve for x
    x = 89,416,008/10,908
  6. Step 6: Final answer
    x = 8,197.29

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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.