Home / 13,631.97-18,811.24-8,325.66

Finding the Fourth Proportional to 13,631.97, 18,811.24 and 8,325.66

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Solution

The fourth proportional to 13,631.97, 18,811.24 and 8,325.66 is: 11,488.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.97 : 18,811.24 = 8,325.66 : x
  2. Step 2: Convert to fraction form
    13,631.97/18,811.24 = 8,325.66/x
  3. Step 3: Cross multiply
    13,631.97x = 18,811.24 × 8,325.66
  4. Step 4: Simplify right side
    13,631.97x = 156,615,988.42
  5. Step 5: Solve for x
    x = 156,615,988.42/13,631.97
  6. Step 6: Final answer
    x = 11,488.87

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1.5x scale

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.