Home / 20,974.13-28,944.30-11,542.49

Finding the Fourth Proportional to 20,974.13, 28,944.30 and 11,542.49

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Solution

The fourth proportional to 20,974.13, 28,944.30 and 11,542.49 is: 15,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.13 : 28,944.30 = 11,542.49 : x
  2. Step 2: Convert to fraction form
    20,974.13/28,944.30 = 11,542.49/x
  3. Step 3: Cross multiply
    20,974.13x = 28,944.30 × 11,542.49
  4. Step 4: Simplify right side
    20,974.13x = 334,089,148.59
  5. Step 5: Solve for x
    x = 334,089,148.59/20,974.13
  6. Step 6: Final answer
    x = 15,928.63

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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.