Home / 18,220.89-25,155.75-11,944.20

Finding the Fourth Proportional to 18,220.89, 25,155.75 and 11,944.20

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Solution

The fourth proportional to 18,220.89, 25,155.75 and 11,944.20 is: 16,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.89 : 25,155.75 = 11,944.20 : x
  2. Step 2: Convert to fraction form
    18,220.89/25,155.75 = 11,944.20/x
  3. Step 3: Cross multiply
    18,220.89x = 25,155.75 × 11,944.20
  4. Step 4: Simplify right side
    18,220.89x = 300,465,309.15
  5. Step 5: Solve for x
    x = 300,465,309.15/18,220.89
  6. Step 6: Final answer
    x = 16,490.16

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Similar ratio
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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.