Home / 20,080.73-30,121.40-5,291.15

Finding the Fourth Proportional to 20,080.73, 30,121.40 and 5,291.15

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Solution

The fourth proportional to 20,080.73, 30,121.40 and 5,291.15 is: 7,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.73 : 30,121.40 = 5,291.15 : x
  2. Step 2: Convert to fraction form
    20,080.73/30,121.40 = 5,291.15/x
  3. Step 3: Cross multiply
    20,080.73x = 30,121.40 × 5,291.15
  4. Step 4: Simplify right side
    20,080.73x = 159,376,708.23
  5. Step 5: Solve for x
    x = 159,376,708.23/20,080.73
  6. Step 6: Final answer
    x = 7,936.80

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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.