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Finding the Fourth Proportional to 18,750.92, 25,878.08 and 11,197.19

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Solution

The fourth proportional to 18,750.92, 25,878.08 and 11,197.19 is: 15,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.92 : 25,878.08 = 11,197.19 : x
  2. Step 2: Convert to fraction form
    18,750.92/25,878.08 = 11,197.19/x
  3. Step 3: Cross multiply
    18,750.92x = 25,878.08 × 11,197.19
  4. Step 4: Simplify right side
    18,750.92x = 289,761,778.60
  5. Step 5: Solve for x
    x = 289,761,778.60/18,750.92
  6. Step 6: Final answer
    x = 15,453.20

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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.