Home / 20,561.20-28,374.96-11,608.88

Finding the Fourth Proportional to 20,561.20, 28,374.96 and 11,608.88

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Solution

The fourth proportional to 20,561.20, 28,374.96 and 11,608.88 is: 16,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.20 : 28,374.96 = 11,608.88 : x
  2. Step 2: Convert to fraction form
    20,561.20/28,374.96 = 11,608.88/x
  3. Step 3: Cross multiply
    20,561.20x = 28,374.96 × 11,608.88
  4. Step 4: Simplify right side
    20,561.20x = 329,401,505.64
  5. Step 5: Solve for x
    x = 329,401,505.64/20,561.20
  6. Step 6: Final answer
    x = 16,020.54

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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.