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Finding the Fourth Proportional to 38,468.44, 57,702.66 and 20,972.44

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Solution

The fourth proportional to 38,468.44, 57,702.66 and 20,972.44 is: 31,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,468.44 : 57,702.66 = 20,972.44 : x
  2. Step 2: Convert to fraction form
    38,468.44/57,702.66 = 20,972.44/x
  3. Step 3: Cross multiply
    38,468.44x = 57,702.66 × 20,972.44
  4. Step 4: Simplify right side
    38,468.44x = 1,210,165,574.69
  5. Step 5: Solve for x
    x = 1,210,165,574.69/38,468.44
  6. Step 6: Final answer
    x = 31,458.66

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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.