Home / 20,704.90-28,572.88-11,273.54

Finding the Fourth Proportional to 20,704.90, 28,572.88 and 11,273.54

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Solution

The fourth proportional to 20,704.90, 28,572.88 and 11,273.54 is: 15,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.90 : 28,572.88 = 11,273.54 : x
  2. Step 2: Convert to fraction form
    20,704.90/28,572.88 = 11,273.54/x
  3. Step 3: Cross multiply
    20,704.90x = 28,572.88 × 11,273.54
  4. Step 4: Simplify right side
    20,704.90x = 322,117,505.60
  5. Step 5: Solve for x
    x = 322,117,505.60/20,704.90
  6. Step 6: Final answer
    x = 15,557.55

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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.