Home / 20,891.94-28,830.92-11,460.57

Finding the Fourth Proportional to 20,891.94, 28,830.92 and 11,460.57

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Solution

The fourth proportional to 20,891.94, 28,830.92 and 11,460.57 is: 15,815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.94 : 28,830.92 = 11,460.57 : x
  2. Step 2: Convert to fraction form
    20,891.94/28,830.92 = 11,460.57/x
  3. Step 3: Cross multiply
    20,891.94x = 28,830.92 × 11,460.57
  4. Step 4: Simplify right side
    20,891.94x = 330,418,776.82
  5. Step 5: Solve for x
    x = 330,418,776.82/20,891.94
  6. Step 6: Final answer
    x = 15,815.61

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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.