Home / 11,209.20-15,475.32-7,236.24

Finding the Fourth Proportional to 11,209.20, 15,475.32 and 7,236.24

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Solution

The fourth proportional to 11,209.20, 15,475.32 and 7,236.24 is: 9,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.20 : 15,475.32 = 7,236.24 : x
  2. Step 2: Convert to fraction form
    11,209.20/15,475.32 = 7,236.24/x
  3. Step 3: Cross multiply
    11,209.20x = 15,475.32 × 7,236.24
  4. Step 4: Simplify right side
    11,209.20x = 111,983,129.60
  5. Step 5: Solve for x
    x = 111,983,129.60/11,209.20
  6. Step 6: Final answer
    x = 9,990.29

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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.