Home / 10,969.12-15,126.33-8,286.94

Finding the Fourth Proportional to 10,969.12, 15,126.33 and 8,286.94

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Solution

The fourth proportional to 10,969.12, 15,126.33 and 8,286.94 is: 11,427.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.12 : 15,126.33 = 8,286.94 : x
  2. Step 2: Convert to fraction form
    10,969.12/15,126.33 = 8,286.94/x
  3. Step 3: Cross multiply
    10,969.12x = 15,126.33 × 8,286.94
  4. Step 4: Simplify right side
    10,969.12x = 125,350,989.13
  5. Step 5: Solve for x
    x = 125,350,989.13/10,969.12
  6. Step 6: Final answer
    x = 11,427.62

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1.5x scale

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.