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Finding the Fourth Proportional to 18,275.07, 25,220.20 and 11,200.12

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Solution

The fourth proportional to 18,275.07, 25,220.20 and 11,200.12 is: 15,456.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.07 : 25,220.20 = 11,200.12 : x
  2. Step 2: Convert to fraction form
    18,275.07/25,220.20 = 11,200.12/x
  3. Step 3: Cross multiply
    18,275.07x = 25,220.20 × 11,200.12
  4. Step 4: Simplify right side
    18,275.07x = 282,469,266.42
  5. Step 5: Solve for x
    x = 282,469,266.42/18,275.07
  6. Step 6: Final answer
    x = 15,456.54

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Half scale
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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.