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Finding the Fourth Proportional to 38,384.40, 57,542.40 and 15,005.40

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Solution

The fourth proportional to 38,384.40, 57,542.40 and 15,005.40 is: 22,494.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,384.40 : 57,542.40 = 15,005.40 : x
  2. Step 2: Convert to fraction form
    38,384.40/57,542.40 = 15,005.40/x
  3. Step 3: Cross multiply
    38,384.40x = 57,542.40 × 15,005.40
  4. Step 4: Simplify right side
    38,384.40x = 863,446,728.96
  5. Step 5: Solve for x
    x = 863,446,728.96/38,384.40
  6. Step 6: Final answer
    x = 22,494.73

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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.