Home / 20,844.36-28,765.44-12,884.76

Finding the Fourth Proportional to 20,844.36, 28,765.44 and 12,884.76

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Solution

The fourth proportional to 20,844.36, 28,765.44 and 12,884.76 is: 17,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.36 : 28,765.44 = 12,884.76 : x
  2. Step 2: Convert to fraction form
    20,844.36/28,765.44 = 12,884.76/x
  3. Step 3: Cross multiply
    20,844.36x = 28,765.44 × 12,884.76
  4. Step 4: Simplify right side
    20,844.36x = 370,635,790.69
  5. Step 5: Solve for x
    x = 370,635,790.69/20,844.36
  6. Step 6: Final answer
    x = 17,781.11

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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.