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Finding the Fourth Proportional to 11,219.52, 15,472.44 and 8,867.28

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Solution

The fourth proportional to 11,219.52, 15,472.44 and 8,867.28 is: 12,228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.52 : 15,472.44 = 8,867.28 : x
  2. Step 2: Convert to fraction form
    11,219.52/15,472.44 = 8,867.28/x
  3. Step 3: Cross multiply
    11,219.52x = 15,472.44 × 8,867.28
  4. Step 4: Simplify right side
    11,219.52x = 137,198,457.76
  5. Step 5: Solve for x
    x = 137,198,457.76/11,219.52
  6. Step 6: Final answer
    x = 12,228.55

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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.