Home / 11,440.43-17,158.89-3,121.13

Finding the Fourth Proportional to 11,440.43, 17,158.89 and 3,121.13

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Solution

The fourth proportional to 11,440.43, 17,158.89 and 3,121.13 is: 4,681.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.43 : 17,158.89 = 3,121.13 : x
  2. Step 2: Convert to fraction form
    11,440.43/17,158.89 = 3,121.13/x
  3. Step 3: Cross multiply
    11,440.43x = 17,158.89 × 3,121.13
  4. Step 4: Simplify right side
    11,440.43x = 53,555,040.55
  5. Step 5: Solve for x
    x = 53,555,040.55/11,440.43
  6. Step 6: Final answer
    x = 4,681.21

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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.