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Finding the Fourth Proportional to 28,170.38, 42,252.82 and 7,393.88

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Solution

The fourth proportional to 28,170.38, 42,252.82 and 7,393.88 is: 11,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.38 : 42,252.82 = 7,393.88 : x
  2. Step 2: Convert to fraction form
    28,170.38/42,252.82 = 7,393.88/x
  3. Step 3: Cross multiply
    28,170.38x = 42,252.82 × 7,393.88
  4. Step 4: Simplify right side
    28,170.38x = 312,412,280.74
  5. Step 5: Solve for x
    x = 312,412,280.74/28,170.38
  6. Step 6: Final answer
    x = 11,090.10

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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.