Home / 20,542.20-28,348.16-11,110.77

Finding the Fourth Proportional to 20,542.20, 28,348.16 and 11,110.77

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Solution

The fourth proportional to 20,542.20, 28,348.16 and 11,110.77 is: 15,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.20 : 28,348.16 = 11,110.77 : x
  2. Step 2: Convert to fraction form
    20,542.20/28,348.16 = 11,110.77/x
  3. Step 3: Cross multiply
    20,542.20x = 28,348.16 × 11,110.77
  4. Step 4: Simplify right side
    20,542.20x = 314,969,743.94
  5. Step 5: Solve for x
    x = 314,969,743.94/20,542.20
  6. Step 6: Final answer
    x = 15,332.81

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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.