Home / 20,227.76-30,339.48-7,080.38

Finding the Fourth Proportional to 20,227.76, 30,339.48 and 7,080.38

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Solution

The fourth proportional to 20,227.76, 30,339.48 and 7,080.38 is: 10,619.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,227.76 : 30,339.48 = 7,080.38 : x
  2. Step 2: Convert to fraction form
    20,227.76/30,339.48 = 7,080.38/x
  3. Step 3: Cross multiply
    20,227.76x = 30,339.48 × 7,080.38
  4. Step 4: Simplify right side
    20,227.76x = 214,815,047.40
  5. Step 5: Solve for x
    x = 214,815,047.40/20,227.76
  6. Step 6: Final answer
    x = 10,619.81

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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.