Home / 12,391.28-18,589.68-6,154.72

Finding the Fourth Proportional to 12,391.28, 18,589.68 and 6,154.72

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Solution

The fourth proportional to 12,391.28, 18,589.68 and 6,154.72 is: 9,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.28 : 18,589.68 = 6,154.72 : x
  2. Step 2: Convert to fraction form
    12,391.28/18,589.68 = 6,154.72/x
  3. Step 3: Cross multiply
    12,391.28x = 18,589.68 × 6,154.72
  4. Step 4: Simplify right side
    12,391.28x = 114,414,275.29
  5. Step 5: Solve for x
    x = 114,414,275.29/12,391.28
  6. Step 6: Final answer
    x = 9,233.45

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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.