Home / 13,731.57-20,597.46-8,991.72

Finding the Fourth Proportional to 13,731.57, 20,597.46 and 8,991.72

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Solution

The fourth proportional to 13,731.57, 20,597.46 and 8,991.72 is: 13,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.57 : 20,597.46 = 8,991.72 : x
  2. Step 2: Convert to fraction form
    13,731.57/20,597.46 = 8,991.72/x
  3. Step 3: Cross multiply
    13,731.57x = 20,597.46 × 8,991.72
  4. Step 4: Simplify right side
    13,731.57x = 185,206,593.03
  5. Step 5: Solve for x
    x = 185,206,593.03/13,731.57
  6. Step 6: Final answer
    x = 13,487.65

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1.5x scale

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.