Home / 20,367.66-28,108.49-11,418.04

Finding the Fourth Proportional to 20,367.66, 28,108.49 and 11,418.04

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Solution

The fourth proportional to 20,367.66, 28,108.49 and 11,418.04 is: 15,757.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.66 : 28,108.49 = 11,418.04 : x
  2. Step 2: Convert to fraction form
    20,367.66/28,108.49 = 11,418.04/x
  3. Step 3: Cross multiply
    20,367.66x = 28,108.49 × 11,418.04
  4. Step 4: Simplify right side
    20,367.66x = 320,943,863.16
  5. Step 5: Solve for x
    x = 320,943,863.16/20,367.66
  6. Step 6: Final answer
    x = 15,757.52

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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.