Home / 11,119.87-15,336.66-7,141.24

Finding the Fourth Proportional to 11,119.87, 15,336.66 and 7,141.24

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Solution

The fourth proportional to 11,119.87, 15,336.66 and 7,141.24 is: 9,849.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.87 : 15,336.66 = 7,141.24 : x
  2. Step 2: Convert to fraction form
    11,119.87/15,336.66 = 7,141.24/x
  3. Step 3: Cross multiply
    11,119.87x = 15,336.66 × 7,141.24
  4. Step 4: Simplify right side
    11,119.87x = 109,522,769.86
  5. Step 5: Solve for x
    x = 109,522,769.86/11,119.87
  6. Step 6: Final answer
    x = 9,849.29

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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.