Home / 10,082.43-13,873.88-9,139.30

Finding the Fourth Proportional to 10,082.43, 13,873.88 and 9,139.30

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Solution

The fourth proportional to 10,082.43, 13,873.88 and 9,139.30 is: 12,576.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082.43 : 13,873.88 = 9,139.30 : x
  2. Step 2: Convert to fraction form
    10,082.43/13,873.88 = 9,139.30/x
  3. Step 3: Cross multiply
    10,082.43x = 13,873.88 × 9,139.30
  4. Step 4: Simplify right side
    10,082.43x = 126,797,539.65
  5. Step 5: Solve for x
    x = 126,797,539.65/10,082.43
  6. Step 6: Final answer
    x = 12,576.09

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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.