Home / 20,839.48-28,758.83-11,765.32

Finding the Fourth Proportional to 20,839.48, 28,758.83 and 11,765.32

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Solution

The fourth proportional to 20,839.48, 28,758.83 and 11,765.32 is: 16,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.48 : 28,758.83 = 11,765.32 : x
  2. Step 2: Convert to fraction form
    20,839.48/28,758.83 = 11,765.32/x
  3. Step 3: Cross multiply
    20,839.48x = 28,758.83 × 11,765.32
  4. Step 4: Simplify right side
    20,839.48x = 338,356,778.95
  5. Step 5: Solve for x
    x = 338,356,778.95/20,839.48
  6. Step 6: Final answer
    x = 16,236.34

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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.