Home / 13,508.80-18,652.03-8,731.57

Finding the Fourth Proportional to 13,508.80, 18,652.03 and 8,731.57

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Solution

The fourth proportional to 13,508.80, 18,652.03 and 8,731.57 is: 12,055.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.80 : 18,652.03 = 8,731.57 : x
  2. Step 2: Convert to fraction form
    13,508.80/18,652.03 = 8,731.57/x
  3. Step 3: Cross multiply
    13,508.80x = 18,652.03 × 8,731.57
  4. Step 4: Simplify right side
    13,508.80x = 162,861,505.59
  5. Step 5: Solve for x
    x = 162,861,505.59/13,508.80
  6. Step 6: Final answer
    x = 12,055.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.