Home / 20,766.42-28,658.07-11,335.32

Finding the Fourth Proportional to 20,766.42, 28,658.07 and 11,335.32

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Solution

The fourth proportional to 20,766.42, 28,658.07 and 11,335.32 is: 15,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.42 : 28,658.07 = 11,335.32 : x
  2. Step 2: Convert to fraction form
    20,766.42/28,658.07 = 11,335.32/x
  3. Step 3: Cross multiply
    20,766.42x = 28,658.07 × 11,335.32
  4. Step 4: Simplify right side
    20,766.42x = 324,848,394.03
  5. Step 5: Solve for x
    x = 324,848,394.03/20,766.42
  6. Step 6: Final answer
    x = 15,642.97

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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.