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Finding the Fourth Proportional to 28,039.29, 42,058.53 and 8,331.18

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Solution

The fourth proportional to 28,039.29, 42,058.53 and 8,331.18 is: 12,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.29 : 42,058.53 = 8,331.18 : x
  2. Step 2: Convert to fraction form
    28,039.29/42,058.53 = 8,331.18/x
  3. Step 3: Cross multiply
    28,039.29x = 42,058.53 × 8,331.18
  4. Step 4: Simplify right side
    28,039.29x = 350,397,183.97
  5. Step 5: Solve for x
    x = 350,397,183.97/28,039.29
  6. Step 6: Final answer
    x = 12,496.65

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Similar ratio
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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.