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Finding the Fourth Proportional to 20,034.46, 30,061.14 and 8,940.16

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Solution

The fourth proportional to 20,034.46, 30,061.14 and 8,940.16 is: 13,414.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,034.46 : 30,061.14 = 8,940.16 : x
  2. Step 2: Convert to fraction form
    20,034.46/30,061.14 = 8,940.16/x
  3. Step 3: Cross multiply
    20,034.46x = 30,061.14 × 8,940.16
  4. Step 4: Simplify right side
    20,034.46x = 268,751,401.38
  5. Step 5: Solve for x
    x = 268,751,401.38/20,034.46
  6. Step 6: Final answer
    x = 13,414.46

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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.