Home / 13,581.34-20,377.82-5,685.70

Finding the Fourth Proportional to 13,581.34, 20,377.82 and 5,685.70

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Solution

The fourth proportional to 13,581.34, 20,377.82 and 5,685.70 is: 8,530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.34 : 20,377.82 = 5,685.70 : x
  2. Step 2: Convert to fraction form
    13,581.34/20,377.82 = 5,685.70/x
  3. Step 3: Cross multiply
    13,581.34x = 20,377.82 × 5,685.70
  4. Step 4: Simplify right side
    13,581.34x = 115,862,091.80
  5. Step 5: Solve for x
    x = 115,862,091.80/13,581.34
  6. Step 6: Final answer
    x = 8,530.98

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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.