Home / 11,221.20-15,476.88-8,236.08

Finding the Fourth Proportional to 11,221.20, 15,476.88 and 8,236.08

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Solution

The fourth proportional to 11,221.20, 15,476.88 and 8,236.08 is: 11,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.20 : 15,476.88 = 8,236.08 : x
  2. Step 2: Convert to fraction form
    11,221.20/15,476.88 = 8,236.08/x
  3. Step 3: Cross multiply
    11,221.20x = 15,476.88 × 8,236.08
  4. Step 4: Simplify right side
    11,221.20x = 127,468,821.83
  5. Step 5: Solve for x
    x = 127,468,821.83/11,221.20
  6. Step 6: Final answer
    x = 11,359.64

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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.