Home / 15,112.26-20,853.90-8,397.36

Finding the Fourth Proportional to 15,112.26, 20,853.90 and 8,397.36

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Solution

The fourth proportional to 15,112.26, 20,853.90 and 8,397.36 is: 11,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.26 : 20,853.90 = 8,397.36 : x
  2. Step 2: Convert to fraction form
    15,112.26/20,853.90 = 8,397.36/x
  3. Step 3: Cross multiply
    15,112.26x = 20,853.90 × 8,397.36
  4. Step 4: Simplify right side
    15,112.26x = 175,117,705.70
  5. Step 5: Solve for x
    x = 175,117,705.70/15,112.26
  6. Step 6: Final answer
    x = 11,587.79

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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.