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Finding the Fourth Proportional to 12,449.28, 18,677.76 and 7,265.28

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Solution

The fourth proportional to 12,449.28, 18,677.76 and 7,265.28 is: 10,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.28 : 18,677.76 = 7,265.28 : x
  2. Step 2: Convert to fraction form
    12,449.28/18,677.76 = 7,265.28/x
  3. Step 3: Cross multiply
    12,449.28x = 18,677.76 × 7,265.28
  4. Step 4: Simplify right side
    12,449.28x = 135,699,156.17
  5. Step 5: Solve for x
    x = 135,699,156.17/12,449.28
  6. Step 6: Final answer
    x = 10,900.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.