Home / 20,937.38-28,894.19-11,506.55

Finding the Fourth Proportional to 20,937.38, 28,894.19 and 11,506.55

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Solution

The fourth proportional to 20,937.38, 28,894.19 and 11,506.55 is: 15,879.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.38 : 28,894.19 = 11,506.55 : x
  2. Step 2: Convert to fraction form
    20,937.38/28,894.19 = 11,506.55/x
  3. Step 3: Cross multiply
    20,937.38x = 28,894.19 × 11,506.55
  4. Step 4: Simplify right side
    20,937.38x = 332,472,239.94
  5. Step 5: Solve for x
    x = 332,472,239.94/20,937.38
  6. Step 6: Final answer
    x = 15,879.37

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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.