Home / 11,418.81-17,119.90-7,711.84

Finding the Fourth Proportional to 11,418.81, 17,119.90 and 7,711.84

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Solution

The fourth proportional to 11,418.81, 17,119.90 and 7,711.84 is: 11,562.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.81 : 17,119.90 = 7,711.84 : x
  2. Step 2: Convert to fraction form
    11,418.81/17,119.90 = 7,711.84/x
  3. Step 3: Cross multiply
    11,418.81x = 17,119.90 × 7,711.84
  4. Step 4: Simplify right side
    11,418.81x = 132,025,929.62
  5. Step 5: Solve for x
    x = 132,025,929.62/11,418.81
  6. Step 6: Final answer
    x = 11,562.14

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1.5x scale

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.