Home / 11,728.90-17,591.19-3,180.51

Finding the Fourth Proportional to 11,728.90, 17,591.19 and 3,180.51

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Solution

The fourth proportional to 11,728.90, 17,591.19 and 3,180.51 is: 4,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.90 : 17,591.19 = 3,180.51 : x
  2. Step 2: Convert to fraction form
    11,728.90/17,591.19 = 3,180.51/x
  3. Step 3: Cross multiply
    11,728.90x = 17,591.19 × 3,180.51
  4. Step 4: Simplify right side
    11,728.90x = 55,948,955.71
  5. Step 5: Solve for x
    x = 55,948,955.71/11,728.90
  6. Step 6: Final answer
    x = 4,770.18

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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.