Home / 18,520.24-27,780.48-5,372.80

Finding the Fourth Proportional to 18,520.24, 27,780.48 and 5,372.80

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Solution

The fourth proportional to 18,520.24, 27,780.48 and 5,372.80 is: 8,059.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.24 : 27,780.48 = 5,372.80 : x
  2. Step 2: Convert to fraction form
    18,520.24/27,780.48 = 5,372.80/x
  3. Step 3: Cross multiply
    18,520.24x = 27,780.48 × 5,372.80
  4. Step 4: Simplify right side
    18,520.24x = 149,258,962.94
  5. Step 5: Solve for x
    x = 149,258,962.94/18,520.24
  6. Step 6: Final answer
    x = 8,059.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.