Home / 20,481.26-28,222.55-15,701.29

Finding the Fourth Proportional to 20,481.26, 28,222.55 and 15,701.29

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Solution

The fourth proportional to 20,481.26, 28,222.55 and 15,701.29 is: 21,635.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.26 : 28,222.55 = 15,701.29 : x
  2. Step 2: Convert to fraction form
    20,481.26/28,222.55 = 15,701.29/x
  3. Step 3: Cross multiply
    20,481.26x = 28,222.55 × 15,701.29
  4. Step 4: Simplify right side
    20,481.26x = 443,130,554.82
  5. Step 5: Solve for x
    x = 443,130,554.82/20,481.26
  6. Step 6: Final answer
    x = 21,635.91

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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.