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Finding the Fourth Proportional to 12,663.68, 17,474.70 and 7,358.42

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Solution

The fourth proportional to 12,663.68, 17,474.70 and 7,358.42 is: 10,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.68 : 17,474.70 = 7,358.42 : x
  2. Step 2: Convert to fraction form
    12,663.68/17,474.70 = 7,358.42/x
  3. Step 3: Cross multiply
    12,663.68x = 17,474.70 × 7,358.42
  4. Step 4: Simplify right side
    12,663.68x = 128,586,181.97
  5. Step 5: Solve for x
    x = 128,586,181.97/12,663.68
  6. Step 6: Final answer
    x = 10,153.93

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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.