Home / 20,112.47-30,170.24-5,321.00

Finding the Fourth Proportional to 20,112.47, 30,170.24 and 5,321.00

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Solution

The fourth proportional to 20,112.47, 30,170.24 and 5,321.00 is: 7,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.47 : 30,170.24 = 5,321.00 : x
  2. Step 2: Convert to fraction form
    20,112.47/30,170.24 = 5,321.00/x
  3. Step 3: Cross multiply
    20,112.47x = 30,170.24 × 5,321.00
  4. Step 4: Simplify right side
    20,112.47x = 160,535,669.58
  5. Step 5: Solve for x
    x = 160,535,669.58/20,112.47
  6. Step 6: Final answer
    x = 7,981.90

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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.