Home / 10,712.88-16,079.70-5,170.12

Finding the Fourth Proportional to 10,712.88, 16,079.70 and 5,170.12

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Solution

The fourth proportional to 10,712.88, 16,079.70 and 5,170.12 is: 7,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.88 : 16,079.70 = 5,170.12 : x
  2. Step 2: Convert to fraction form
    10,712.88/16,079.70 = 5,170.12/x
  3. Step 3: Cross multiply
    10,712.88x = 16,079.70 × 5,170.12
  4. Step 4: Simplify right side
    10,712.88x = 83,133,872.31
  5. Step 5: Solve for x
    x = 83,133,872.31/10,712.88
  6. Step 6: Final answer
    x = 7,760.18

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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.