Home / 20,942.60-28,902.66-11,513.16

Finding the Fourth Proportional to 20,942.60, 28,902.66 and 11,513.16

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Solution

The fourth proportional to 20,942.60, 28,902.66 and 11,513.16 is: 15,889.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.60 : 28,902.66 = 11,513.16 : x
  2. Step 2: Convert to fraction form
    20,942.60/28,902.66 = 11,513.16/x
  3. Step 3: Cross multiply
    20,942.60x = 28,902.66 × 11,513.16
  4. Step 4: Simplify right side
    20,942.60x = 332,760,949.01
  5. Step 5: Solve for x
    x = 332,760,949.01/20,942.60
  6. Step 6: Final answer
    x = 15,889.19

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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.