Home / 11,872.47-17,820.15-8,743.70

Finding the Fourth Proportional to 11,872.47, 17,820.15 and 8,743.70

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Solution

The fourth proportional to 11,872.47, 17,820.15 and 8,743.70 is: 13,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.47 : 17,820.15 = 8,743.70 : x
  2. Step 2: Convert to fraction form
    11,872.47/17,820.15 = 8,743.70/x
  3. Step 3: Cross multiply
    11,872.47x = 17,820.15 × 8,743.70
  4. Step 4: Simplify right side
    11,872.47x = 155,813,956.45
  5. Step 5: Solve for x
    x = 155,813,956.45/11,872.47
  6. Step 6: Final answer
    x = 13,123.97

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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.