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Finding the Fourth Proportional to 28,292.69, 42,439.02 and 7,232.78

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Solution

The fourth proportional to 28,292.69, 42,439.02 and 7,232.78 is: 10,849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.69 : 42,439.02 = 7,232.78 : x
  2. Step 2: Convert to fraction form
    28,292.69/42,439.02 = 7,232.78/x
  3. Step 3: Cross multiply
    28,292.69x = 42,439.02 × 7,232.78
  4. Step 4: Simplify right side
    28,292.69x = 306,951,882.88
  5. Step 5: Solve for x
    x = 306,951,882.88/28,292.69
  6. Step 6: Final answer
    x = 10,849.16

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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.