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Finding the Fourth Proportional to 15,034.60, 20,737.38 and 12,377.80

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Solution

The fourth proportional to 15,034.60, 20,737.38 and 12,377.80 is: 17,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.60 : 20,737.38 = 12,377.80 : x
  2. Step 2: Convert to fraction form
    15,034.60/20,737.38 = 12,377.80/x
  3. Step 3: Cross multiply
    15,034.60x = 20,737.38 × 12,377.80
  4. Step 4: Simplify right side
    15,034.60x = 256,683,142.16
  5. Step 5: Solve for x
    x = 256,683,142.16/15,034.60
  6. Step 6: Final answer
    x = 17,072.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.