Home / 20,766.24-28,657.80-11,335.14

Finding the Fourth Proportional to 20,766.24, 28,657.80 and 11,335.14

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Solution

The fourth proportional to 20,766.24, 28,657.80 and 11,335.14 is: 15,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.24 : 28,657.80 = 11,335.14 : x
  2. Step 2: Convert to fraction form
    20,766.24/28,657.80 = 11,335.14/x
  3. Step 3: Cross multiply
    20,766.24x = 28,657.80 × 11,335.14
  4. Step 4: Simplify right side
    20,766.24x = 324,840,175.09
  5. Step 5: Solve for x
    x = 324,840,175.09/20,766.24
  6. Step 6: Final answer
    x = 15,642.71

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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.