Home / 20,921.15-28,874.61-16,148.03

Finding the Fourth Proportional to 20,921.15, 28,874.61 and 16,148.03

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Solution

The fourth proportional to 20,921.15, 28,874.61 and 16,148.03 is: 22,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921.15 : 28,874.61 = 16,148.03 : x
  2. Step 2: Convert to fraction form
    20,921.15/28,874.61 = 16,148.03/x
  3. Step 3: Cross multiply
    20,921.15x = 28,874.61 × 16,148.03
  4. Step 4: Simplify right side
    20,921.15x = 466,267,924.15
  5. Step 5: Solve for x
    x = 466,267,924.15/20,921.15
  6. Step 6: Final answer
    x = 22,286.91

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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.