Home / 20,874.97-28,807.28-11,443.51

Finding the Fourth Proportional to 20,874.97, 28,807.28 and 11,443.51

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Solution

The fourth proportional to 20,874.97, 28,807.28 and 11,443.51 is: 15,791.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.97 : 28,807.28 = 11,443.51 : x
  2. Step 2: Convert to fraction form
    20,874.97/28,807.28 = 11,443.51/x
  3. Step 3: Cross multiply
    20,874.97x = 28,807.28 × 11,443.51
  4. Step 4: Simplify right side
    20,874.97x = 329,656,252.72
  5. Step 5: Solve for x
    x = 329,656,252.72/20,874.97
  6. Step 6: Final answer
    x = 15,791.94

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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.