Home / 13,121.18-18,096.07-8,871.11

Finding the Fourth Proportional to 13,121.18, 18,096.07 and 8,871.11

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Solution

The fourth proportional to 13,121.18, 18,096.07 and 8,871.11 is: 12,234.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.18 : 18,096.07 = 8,871.11 : x
  2. Step 2: Convert to fraction form
    13,121.18/18,096.07 = 8,871.11/x
  3. Step 3: Cross multiply
    13,121.18x = 18,096.07 × 8,871.11
  4. Step 4: Simplify right side
    13,121.18x = 160,532,227.54
  5. Step 5: Solve for x
    x = 160,532,227.54/13,121.18
  6. Step 6: Final answer
    x = 12,234.59

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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.