Home / 10,121.91-15,186.51-3,549.11

Finding the Fourth Proportional to 10,121.91, 15,186.51 and 3,549.11

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Solution

The fourth proportional to 10,121.91, 15,186.51 and 3,549.11 is: 5,324.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.91 : 15,186.51 = 3,549.11 : x
  2. Step 2: Convert to fraction form
    10,121.91/15,186.51 = 3,549.11/x
  3. Step 3: Cross multiply
    10,121.91x = 15,186.51 × 3,549.11
  4. Step 4: Simplify right side
    10,121.91x = 53,898,518.57
  5. Step 5: Solve for x
    x = 53,898,518.57/10,121.91
  6. Step 6: Final answer
    x = 5,324.94

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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.