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Finding the Fourth Proportional to 12,755.76, 17,602 and 7,449.92

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Solution

The fourth proportional to 12,755.76, 17,602 and 7,449.92 is: 10,280.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.76 : 17,602 = 7,449.92 : x
  2. Step 2: Convert to fraction form
    12,755.76/17,602 = 7,449.92/x
  3. Step 3: Cross multiply
    12,755.76x = 17,602 × 7,449.92
  4. Step 4: Simplify right side
    12,755.76x = 131,133,491.84
  5. Step 5: Solve for x
    x = 131,133,491.84/12,755.76
  6. Step 6: Final answer
    x = 10,280.34

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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.