Home / 28,112.70-42,169.06-11,480.57

Finding the Fourth Proportional to 28,112.70, 42,169.06 and 11,480.57

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Solution

The fourth proportional to 28,112.70, 42,169.06 and 11,480.57 is: 17,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.70 : 42,169.06 = 11,480.57 : x
  2. Step 2: Convert to fraction form
    28,112.70/42,169.06 = 11,480.57/x
  3. Step 3: Cross multiply
    28,112.70x = 42,169.06 × 11,480.57
  4. Step 4: Simplify right side
    28,112.70x = 484,124,806.80
  5. Step 5: Solve for x
    x = 484,124,806.80/28,112.70
  6. Step 6: Final answer
    x = 17,220.86

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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.