Home / 38,221.20-57,331.80-10,519.20

Finding the Fourth Proportional to 38,221.20, 57,331.80 and 10,519.20

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Solution

The fourth proportional to 38,221.20, 57,331.80 and 10,519.20 is: 15,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,221.20 : 57,331.80 = 10,519.20 : x
  2. Step 2: Convert to fraction form
    38,221.20/57,331.80 = 10,519.20/x
  3. Step 3: Cross multiply
    38,221.20x = 57,331.80 × 10,519.20
  4. Step 4: Simplify right side
    38,221.20x = 603,084,670.56
  5. Step 5: Solve for x
    x = 603,084,670.56/38,221.20
  6. Step 6: Final answer
    x = 15,778.80

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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.