Home / 15,020.97-20,729.04-8,215.03

Finding the Fourth Proportional to 15,020.97, 20,729.04 and 8,215.03

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Solution

The fourth proportional to 15,020.97, 20,729.04 and 8,215.03 is: 11,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.97 : 20,729.04 = 8,215.03 : x
  2. Step 2: Convert to fraction form
    15,020.97/20,729.04 = 8,215.03/x
  3. Step 3: Cross multiply
    15,020.97x = 20,729.04 × 8,215.03
  4. Step 4: Simplify right side
    15,020.97x = 170,289,685.47
  5. Step 5: Solve for x
    x = 170,289,685.47/15,020.97
  6. Step 6: Final answer
    x = 11,336.80

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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.