Home / 12,082.20-18,123.90-4,291.62

Finding the Fourth Proportional to 12,082.20, 18,123.90 and 4,291.62

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Solution

The fourth proportional to 12,082.20, 18,123.90 and 4,291.62 is: 6,437.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.20 : 18,123.90 = 4,291.62 : x
  2. Step 2: Convert to fraction form
    12,082.20/18,123.90 = 4,291.62/x
  3. Step 3: Cross multiply
    12,082.20x = 18,123.90 × 4,291.62
  4. Step 4: Simplify right side
    12,082.20x = 77,780,891.72
  5. Step 5: Solve for x
    x = 77,780,891.72/12,082.20
  6. Step 6: Final answer
    x = 6,437.64

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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.