Home / 28,209.76-38,884.56-22,231.84

Finding the Fourth Proportional to 28,209.76, 38,884.56 and 22,231.84

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Solution

The fourth proportional to 28,209.76, 38,884.56 and 22,231.84 is: 30,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.76 : 38,884.56 = 22,231.84 : x
  2. Step 2: Convert to fraction form
    28,209.76/38,884.56 = 22,231.84/x
  3. Step 3: Cross multiply
    28,209.76x = 38,884.56 × 22,231.84
  4. Step 4: Simplify right side
    28,209.76x = 864,475,316.39
  5. Step 5: Solve for x
    x = 864,475,316.39/28,209.76
  6. Step 6: Final answer
    x = 30,644.55

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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.