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Finding the Fourth Proportional to 12,754.76, 17,601.28 and 7,376.79

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Solution

The fourth proportional to 12,754.76, 17,601.28 and 7,376.79 is: 10,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,754.76 : 17,601.28 = 7,376.79 : x
  2. Step 2: Convert to fraction form
    12,754.76/17,601.28 = 7,376.79/x
  3. Step 3: Cross multiply
    12,754.76x = 17,601.28 × 7,376.79
  4. Step 4: Simplify right side
    12,754.76x = 129,840,946.29
  5. Step 5: Solve for x
    x = 129,840,946.29/12,754.76
  6. Step 6: Final answer
    x = 10,179.80

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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.