Home / 20,701.48-28,568.30-11,270.04

Finding the Fourth Proportional to 20,701.48, 28,568.30 and 11,270.04

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Solution

The fourth proportional to 20,701.48, 28,568.30 and 11,270.04 is: 15,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.48 : 28,568.30 = 11,270.04 : x
  2. Step 2: Convert to fraction form
    20,701.48/28,568.30 = 11,270.04/x
  3. Step 3: Cross multiply
    20,701.48x = 28,568.30 × 11,270.04
  4. Step 4: Simplify right side
    20,701.48x = 321,965,883.73
  5. Step 5: Solve for x
    x = 321,965,883.73/20,701.48
  6. Step 6: Final answer
    x = 15,552.80

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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.