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Finding the Fourth Proportional to 38,601.30, 57,905.15 and 12,305.30

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Solution

The fourth proportional to 38,601.30, 57,905.15 and 12,305.30 is: 18,458.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,601.30 : 57,905.15 = 12,305.30 : x
  2. Step 2: Convert to fraction form
    38,601.30/57,905.15 = 12,305.30/x
  3. Step 3: Cross multiply
    38,601.30x = 57,905.15 × 12,305.30
  4. Step 4: Simplify right side
    38,601.30x = 712,540,242.30
  5. Step 5: Solve for x
    x = 712,540,242.30/38,601.30
  6. Step 6: Final answer
    x = 18,458.97

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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.