Home / 13,912.52-20,871.20-6,121.13

Finding the Fourth Proportional to 13,912.52, 20,871.20 and 6,121.13

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Solution

The fourth proportional to 13,912.52, 20,871.20 and 6,121.13 is: 9,182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.52 : 20,871.20 = 6,121.13 : x
  2. Step 2: Convert to fraction form
    13,912.52/20,871.20 = 6,121.13/x
  3. Step 3: Cross multiply
    13,912.52x = 20,871.20 × 6,121.13
  4. Step 4: Simplify right side
    13,912.52x = 127,755,239.40
  5. Step 5: Solve for x
    x = 127,755,239.40/13,912.52
  6. Step 6: Final answer
    x = 9,182.76

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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.