Home / 10,091.70-15,139.98-3,166.20

Finding the Fourth Proportional to 10,091.70, 15,139.98 and 3,166.20

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Solution

The fourth proportional to 10,091.70, 15,139.98 and 3,166.20 is: 4,750.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.70 : 15,139.98 = 3,166.20 : x
  2. Step 2: Convert to fraction form
    10,091.70/15,139.98 = 3,166.20/x
  3. Step 3: Cross multiply
    10,091.70x = 15,139.98 × 3,166.20
  4. Step 4: Simplify right side
    10,091.70x = 47,936,204.68
  5. Step 5: Solve for x
    x = 47,936,204.68/10,091.70
  6. Step 6: Final answer
    x = 4,750.06

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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.