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Finding the Fourth Proportional to 38,339.46, 52,905.42 and 21,342.42

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Solution

The fourth proportional to 38,339.46, 52,905.42 and 21,342.42 is: 29,450.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,339.46 : 52,905.42 = 21,342.42 : x
  2. Step 2: Convert to fraction form
    38,339.46/52,905.42 = 21,342.42/x
  3. Step 3: Cross multiply
    38,339.46x = 52,905.42 × 21,342.42
  4. Step 4: Simplify right side
    38,339.46x = 1,129,129,693.92
  5. Step 5: Solve for x
    x = 1,129,129,693.92/38,339.46
  6. Step 6: Final answer
    x = 29,450.85

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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.