Home / 28,180.11-38,891.16-15,604.86

Finding the Fourth Proportional to 28,180.11, 38,891.16 and 15,604.86

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Solution

The fourth proportional to 28,180.11, 38,891.16 and 15,604.86 is: 21,536.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.11 : 38,891.16 = 15,604.86 : x
  2. Step 2: Convert to fraction form
    28,180.11/38,891.16 = 15,604.86/x
  3. Step 3: Cross multiply
    28,180.11x = 38,891.16 × 15,604.86
  4. Step 4: Simplify right side
    28,180.11x = 606,891,107.04
  5. Step 5: Solve for x
    x = 606,891,107.04/28,180.11
  6. Step 6: Final answer
    x = 21,536.15

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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.