Home / 12,170.28-18,167.38-10,694.05

Finding the Fourth Proportional to 12,170.28, 18,167.38 and 10,694.05

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Solution

The fourth proportional to 12,170.28, 18,167.38 and 10,694.05 is: 15,963.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.28 : 18,167.38 = 10,694.05 : x
  2. Step 2: Convert to fraction form
    12,170.28/18,167.38 = 10,694.05/x
  3. Step 3: Cross multiply
    12,170.28x = 18,167.38 × 10,694.05
  4. Step 4: Simplify right side
    12,170.28x = 194,282,870.09
  5. Step 5: Solve for x
    x = 194,282,870.09/12,170.28
  6. Step 6: Final answer
    x = 15,963.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.