Home / 20,902.33-28,845.27-11,470.96

Finding the Fourth Proportional to 20,902.33, 28,845.27 and 11,470.96

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Solution

The fourth proportional to 20,902.33, 28,845.27 and 11,470.96 is: 15,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.33 : 28,845.27 = 11,470.96 : x
  2. Step 2: Convert to fraction form
    20,902.33/28,845.27 = 11,470.96/x
  3. Step 3: Cross multiply
    20,902.33x = 28,845.27 × 11,470.96
  4. Step 4: Simplify right side
    20,902.33x = 330,882,938.36
  5. Step 5: Solve for x
    x = 330,882,938.36/20,902.33
  6. Step 6: Final answer
    x = 15,829.95

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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.