Home / 28,976.10-39,986.33-17,040.21

Finding the Fourth Proportional to 28,976.10, 39,986.33 and 17,040.21

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Solution

The fourth proportional to 28,976.10, 39,986.33 and 17,040.21 is: 23,515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.10 : 39,986.33 = 17,040.21 : x
  2. Step 2: Convert to fraction form
    28,976.10/39,986.33 = 17,040.21/x
  3. Step 3: Cross multiply
    28,976.10x = 39,986.33 × 17,040.21
  4. Step 4: Simplify right side
    28,976.10x = 681,375,375.13
  5. Step 5: Solve for x
    x = 681,375,375.13/28,976.10
  6. Step 6: Final answer
    x = 23,515.08

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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.