Home / 20,273.28-27,915.18-18,372.48

Finding the Fourth Proportional to 20,273.28, 27,915.18 and 18,372.48

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Solution

The fourth proportional to 20,273.28, 27,915.18 and 18,372.48 is: 25,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.28 : 27,915.18 = 18,372.48 : x
  2. Step 2: Convert to fraction form
    20,273.28/27,915.18 = 18,372.48/x
  3. Step 3: Cross multiply
    20,273.28x = 27,915.18 × 18,372.48
  4. Step 4: Simplify right side
    20,273.28x = 512,871,086.25
  5. Step 5: Solve for x
    x = 512,871,086.25/20,273.28
  6. Step 6: Final answer
    x = 25,297.88

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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.