Home / 20,906.60-28,851.31-11,346.57

Finding the Fourth Proportional to 20,906.60, 28,851.31 and 11,346.57

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Solution

The fourth proportional to 20,906.60, 28,851.31 and 11,346.57 is: 15,658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.60 : 28,851.31 = 11,346.57 : x
  2. Step 2: Convert to fraction form
    20,906.60/28,851.31 = 11,346.57/x
  3. Step 3: Cross multiply
    20,906.60x = 28,851.31 × 11,346.57
  4. Step 4: Simplify right side
    20,906.60x = 327,363,336.38
  5. Step 5: Solve for x
    x = 327,363,336.38/20,906.60
  6. Step 6: Final answer
    x = 15,658.37

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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.