Home / 15,231.44-21,019.86-8,517.35

Finding the Fourth Proportional to 15,231.44, 21,019.86 and 8,517.35

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Solution

The fourth proportional to 15,231.44, 21,019.86 and 8,517.35 is: 11,754.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.44 : 21,019.86 = 8,517.35 : x
  2. Step 2: Convert to fraction form
    15,231.44/21,019.86 = 8,517.35/x
  3. Step 3: Cross multiply
    15,231.44x = 21,019.86 × 8,517.35
  4. Step 4: Simplify right side
    15,231.44x = 179,033,504.57
  5. Step 5: Solve for x
    x = 179,033,504.57/15,231.44
  6. Step 6: Final answer
    x = 11,754.21

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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.