Home / 12,353.28-17,047.38-6,687.90

Finding the Fourth Proportional to 12,353.28, 17,047.38 and 6,687.90

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Solution

The fourth proportional to 12,353.28, 17,047.38 and 6,687.90 is: 9,229.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.28 : 17,047.38 = 6,687.90 : x
  2. Step 2: Convert to fraction form
    12,353.28/17,047.38 = 6,687.90/x
  3. Step 3: Cross multiply
    12,353.28x = 17,047.38 × 6,687.90
  4. Step 4: Simplify right side
    12,353.28x = 114,011,172.70
  5. Step 5: Solve for x
    x = 114,011,172.70/12,353.28
  6. Step 6: Final answer
    x = 9,229.22

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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.