Home / 20,112.48-30,170.25-5,321.01

Finding the Fourth Proportional to 20,112.48, 30,170.25 and 5,321.01

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Solution

The fourth proportional to 20,112.48, 30,170.25 and 5,321.01 is: 7,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.48 : 30,170.25 = 5,321.01 : x
  2. Step 2: Convert to fraction form
    20,112.48/30,170.25 = 5,321.01/x
  3. Step 3: Cross multiply
    20,112.48x = 30,170.25 × 5,321.01
  4. Step 4: Simplify right side
    20,112.48x = 160,536,201.95
  5. Step 5: Solve for x
    x = 160,536,201.95/20,112.48
  6. Step 6: Final answer
    x = 7,981.92

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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.