Home / 13,687.43-20,531.75-5,366.70

Finding the Fourth Proportional to 13,687.43, 20,531.75 and 5,366.70

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Solution

The fourth proportional to 13,687.43, 20,531.75 and 5,366.70 is: 8,050.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.43 : 20,531.75 = 5,366.70 : x
  2. Step 2: Convert to fraction form
    13,687.43/20,531.75 = 5,366.70/x
  3. Step 3: Cross multiply
    13,687.43x = 20,531.75 × 5,366.70
  4. Step 4: Simplify right side
    13,687.43x = 110,187,715.89
  5. Step 5: Solve for x
    x = 110,187,715.89/13,687.43
  6. Step 6: Final answer
    x = 8,050.29

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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.