Home / 20,801.26-28,706.16-11,370.43

Finding the Fourth Proportional to 20,801.26, 28,706.16 and 11,370.43

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Solution

The fourth proportional to 20,801.26, 28,706.16 and 11,370.43 is: 15,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.26 : 28,706.16 = 11,370.43 : x
  2. Step 2: Convert to fraction form
    20,801.26/28,706.16 = 11,370.43/x
  3. Step 3: Cross multiply
    20,801.26x = 28,706.16 × 11,370.43
  4. Step 4: Simplify right side
    20,801.26x = 326,401,382.85
  5. Step 5: Solve for x
    x = 326,401,382.85/20,801.26
  6. Step 6: Final answer
    x = 15,691.42

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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.