Home / 10,986.20-15,162.45-6,736.50

Finding the Fourth Proportional to 10,986.20, 15,162.45 and 6,736.50

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Solution

The fourth proportional to 10,986.20, 15,162.45 and 6,736.50 is: 9,297.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.20 : 15,162.45 = 6,736.50 : x
  2. Step 2: Convert to fraction form
    10,986.20/15,162.45 = 6,736.50/x
  3. Step 3: Cross multiply
    10,986.20x = 15,162.45 × 6,736.50
  4. Step 4: Simplify right side
    10,986.20x = 102,141,819.16
  5. Step 5: Solve for x
    x = 102,141,819.16/10,986.20
  6. Step 6: Final answer
    x = 9,297.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.