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Finding the Fourth Proportional to 38,426.70, 57,640.05 and 10,724.70

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Solution

The fourth proportional to 38,426.70, 57,640.05 and 10,724.70 is: 16,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,426.70 : 57,640.05 = 10,724.70 : x
  2. Step 2: Convert to fraction form
    38,426.70/57,640.05 = 10,724.70/x
  3. Step 3: Cross multiply
    38,426.70x = 57,640.05 × 10,724.70
  4. Step 4: Simplify right side
    38,426.70x = 618,172,244.24
  5. Step 5: Solve for x
    x = 618,172,244.24/38,426.70
  6. Step 6: Final answer
    x = 16,087.05

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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.