Home / 11,227.66-15,481.52-7,189.20

Finding the Fourth Proportional to 11,227.66, 15,481.52 and 7,189.20

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Solution

The fourth proportional to 11,227.66, 15,481.52 and 7,189.20 is: 9,913.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,227.66 : 15,481.52 = 7,189.20 : x
  2. Step 2: Convert to fraction form
    11,227.66/15,481.52 = 7,189.20/x
  3. Step 3: Cross multiply
    11,227.66x = 15,481.52 × 7,189.20
  4. Step 4: Simplify right side
    11,227.66x = 111,299,743.58
  5. Step 5: Solve for x
    x = 111,299,743.58/11,227.66
  6. Step 6: Final answer
    x = 9,913.00

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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.