Home / 20,732.85-28,608.12-11,657.88

Finding the Fourth Proportional to 20,732.85, 28,608.12 and 11,657.88

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Solution

The fourth proportional to 20,732.85, 28,608.12 and 11,657.88 is: 16,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.85 : 28,608.12 = 11,657.88 : x
  2. Step 2: Convert to fraction form
    20,732.85/28,608.12 = 11,657.88/x
  3. Step 3: Cross multiply
    20,732.85x = 28,608.12 × 11,657.88
  4. Step 4: Simplify right side
    20,732.85x = 333,510,029.99
  5. Step 5: Solve for x
    x = 333,510,029.99/20,732.85
  6. Step 6: Final answer
    x = 16,086.07

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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.