Home / 20,801.42-28,706.10-11,370.14

Finding the Fourth Proportional to 20,801.42, 28,706.10 and 11,370.14

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Solution

The fourth proportional to 20,801.42, 28,706.10 and 11,370.14 is: 15,690.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.42 : 28,706.10 = 11,370.14 : x
  2. Step 2: Convert to fraction form
    20,801.42/28,706.10 = 11,370.14/x
  3. Step 3: Cross multiply
    20,801.42x = 28,706.10 × 11,370.14
  4. Step 4: Simplify right side
    20,801.42x = 326,392,375.85
  5. Step 5: Solve for x
    x = 326,392,375.85/20,801.42
  6. Step 6: Final answer
    x = 15,690.87

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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.