Home / 20,179.80-30,272.40-7,036.20

Finding the Fourth Proportional to 20,179.80, 30,272.40 and 7,036.20

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Solution

The fourth proportional to 20,179.80, 30,272.40 and 7,036.20 is: 10,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.80 : 30,272.40 = 7,036.20 : x
  2. Step 2: Convert to fraction form
    20,179.80/30,272.40 = 7,036.20/x
  3. Step 3: Cross multiply
    20,179.80x = 30,272.40 × 7,036.20
  4. Step 4: Simplify right side
    20,179.80x = 213,002,660.88
  5. Step 5: Solve for x
    x = 213,002,660.88/20,179.80
  6. Step 6: Final answer
    x = 10,555.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.