Home / 20,105.31-30,171.80-9,024.39

Finding the Fourth Proportional to 20,105.31, 30,171.80 and 9,024.39

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Solution

The fourth proportional to 20,105.31, 30,171.80 and 9,024.39 is: 13,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.31 : 30,171.80 = 9,024.39 : x
  2. Step 2: Convert to fraction form
    20,105.31/30,171.80 = 9,024.39/x
  3. Step 3: Cross multiply
    20,105.31x = 30,171.80 × 9,024.39
  4. Step 4: Simplify right side
    20,105.31x = 272,282,090.20
  5. Step 5: Solve for x
    x = 272,282,090.20/20,105.31
  6. Step 6: Final answer
    x = 13,542.79

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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.