Home / 20,132.75-27,784.12-11,180.29

Finding the Fourth Proportional to 20,132.75, 27,784.12 and 11,180.29

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Solution

The fourth proportional to 20,132.75, 27,784.12 and 11,180.29 is: 15,429.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.75 : 27,784.12 = 11,180.29 : x
  2. Step 2: Convert to fraction form
    20,132.75/27,784.12 = 11,180.29/x
  3. Step 3: Cross multiply
    20,132.75x = 27,784.12 × 11,180.29
  4. Step 4: Simplify right side
    20,132.75x = 310,634,421.58
  5. Step 5: Solve for x
    x = 310,634,421.58/20,132.75
  6. Step 6: Final answer
    x = 15,429.31

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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.