Home / 20,844.56-28,759.82-11,888.80

Finding the Fourth Proportional to 20,844.56, 28,759.82 and 11,888.80

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Solution

The fourth proportional to 20,844.56, 28,759.82 and 11,888.80 is: 16,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.56 : 28,759.82 = 11,888.80 : x
  2. Step 2: Convert to fraction form
    20,844.56/28,759.82 = 11,888.80/x
  3. Step 3: Cross multiply
    20,844.56x = 28,759.82 × 11,888.80
  4. Step 4: Simplify right side
    20,844.56x = 341,919,616.67
  5. Step 5: Solve for x
    x = 341,919,616.67/20,844.56
  6. Step 6: Final answer
    x = 16,403.30

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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.