Home / 20,180.80-27,850.16-11,106.52

Finding the Fourth Proportional to 20,180.80, 27,850.16 and 11,106.52

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Solution

The fourth proportional to 20,180.80, 27,850.16 and 11,106.52 is: 15,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.80 : 27,850.16 = 11,106.52 : x
  2. Step 2: Convert to fraction form
    20,180.80/27,850.16 = 11,106.52/x
  3. Step 3: Cross multiply
    20,180.80x = 27,850.16 × 11,106.52
  4. Step 4: Simplify right side
    20,180.80x = 309,318,359.04
  5. Step 5: Solve for x
    x = 309,318,359.04/20,180.80
  6. Step 6: Final answer
    x = 15,327.36

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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.