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Finding the Fourth Proportional to 12,555.92, 17,211.94 and 12,439.76

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Solution

The fourth proportional to 12,555.92, 17,211.94 and 12,439.76 is: 17,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.92 : 17,211.94 = 12,439.76 : x
  2. Step 2: Convert to fraction form
    12,555.92/17,211.94 = 12,439.76/x
  3. Step 3: Cross multiply
    12,555.92x = 17,211.94 × 12,439.76
  4. Step 4: Simplify right side
    12,555.92x = 214,112,402.73
  5. Step 5: Solve for x
    x = 214,112,402.73/12,555.92
  6. Step 6: Final answer
    x = 17,052.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.