Home / 18,261.38-25,177.86-15,240.84

Finding the Fourth Proportional to 18,261.38, 25,177.86 and 15,240.84

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Solution

The fourth proportional to 18,261.38, 25,177.86 and 15,240.84 is: 21,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.38 : 25,177.86 = 15,240.84 : x
  2. Step 2: Convert to fraction form
    18,261.38/25,177.86 = 15,240.84/x
  3. Step 3: Cross multiply
    18,261.38x = 25,177.86 × 15,240.84
  4. Step 4: Simplify right side
    18,261.38x = 383,731,735.80
  5. Step 5: Solve for x
    x = 383,731,735.80/18,261.38
  6. Step 6: Final answer
    x = 21,013.29

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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.