Home / 20,132.96-27,781.44-11,754.32

Finding the Fourth Proportional to 20,132.96, 27,781.44 and 11,754.32

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Solution

The fourth proportional to 20,132.96, 27,781.44 and 11,754.32 is: 16,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.96 : 27,781.44 = 11,754.32 : x
  2. Step 2: Convert to fraction form
    20,132.96/27,781.44 = 11,754.32/x
  3. Step 3: Cross multiply
    20,132.96x = 27,781.44 × 11,754.32
  4. Step 4: Simplify right side
    20,132.96x = 326,551,796.91
  5. Step 5: Solve for x
    x = 326,551,796.91/20,132.96
  6. Step 6: Final answer
    x = 16,219.76

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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.