Home / 11,299.20-15,585.12-7,949.04

Finding the Fourth Proportional to 11,299.20, 15,585.12 and 7,949.04

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Solution

The fourth proportional to 11,299.20, 15,585.12 and 7,949.04 is: 10,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.20 : 15,585.12 = 7,949.04 : x
  2. Step 2: Convert to fraction form
    11,299.20/15,585.12 = 7,949.04/x
  3. Step 3: Cross multiply
    11,299.20x = 15,585.12 × 7,949.04
  4. Step 4: Simplify right side
    11,299.20x = 123,886,742.28
  5. Step 5: Solve for x
    x = 123,886,742.28/11,299.20
  6. Step 6: Final answer
    x = 10,964.20

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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.