Home / 12,191.31-18,283.24-5,171.19

Finding the Fourth Proportional to 12,191.31, 18,283.24 and 5,171.19

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Solution

The fourth proportional to 12,191.31, 18,283.24 and 5,171.19 is: 7,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.31 : 18,283.24 = 5,171.19 : x
  2. Step 2: Convert to fraction form
    12,191.31/18,283.24 = 5,171.19/x
  3. Step 3: Cross multiply
    12,191.31x = 18,283.24 × 5,171.19
  4. Step 4: Simplify right side
    12,191.31x = 94,546,107.86
  5. Step 5: Solve for x
    x = 94,546,107.86/12,191.31
  6. Step 6: Final answer
    x = 7,755.20

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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.