Home / 12,382.78-18,572.12-4,589.76

Finding the Fourth Proportional to 12,382.78, 18,572.12 and 4,589.76

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Solution

The fourth proportional to 12,382.78, 18,572.12 and 4,589.76 is: 6,883.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.78 : 18,572.12 = 4,589.76 : x
  2. Step 2: Convert to fraction form
    12,382.78/18,572.12 = 4,589.76/x
  3. Step 3: Cross multiply
    12,382.78x = 18,572.12 × 4,589.76
  4. Step 4: Simplify right side
    12,382.78x = 85,241,573.49
  5. Step 5: Solve for x
    x = 85,241,573.49/12,382.78
  6. Step 6: Final answer
    x = 6,883.88

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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.