Home / 10,091.25-15,139.31-3,165.75

Finding the Fourth Proportional to 10,091.25, 15,139.31 and 3,165.75

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Solution

The fourth proportional to 10,091.25, 15,139.31 and 3,165.75 is: 4,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.25 : 15,139.31 = 3,165.75 : x
  2. Step 2: Convert to fraction form
    10,091.25/15,139.31 = 3,165.75/x
  3. Step 3: Cross multiply
    10,091.25x = 15,139.31 × 3,165.75
  4. Step 4: Simplify right side
    10,091.25x = 47,927,254.80
  5. Step 5: Solve for x
    x = 47,927,254.80/10,091.25
  6. Step 6: Final answer
    x = 4,749.39

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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.