Home / 15,226.82-21,012.56-8,512.48

Finding the Fourth Proportional to 15,226.82, 21,012.56 and 8,512.48

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Solution

The fourth proportional to 15,226.82, 21,012.56 and 8,512.48 is: 11,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.82 : 21,012.56 = 8,512.48 : x
  2. Step 2: Convert to fraction form
    15,226.82/21,012.56 = 8,512.48/x
  3. Step 3: Cross multiply
    15,226.82x = 21,012.56 × 8,512.48
  4. Step 4: Simplify right side
    15,226.82x = 178,868,996.75
  5. Step 5: Solve for x
    x = 178,868,996.75/15,226.82
  6. Step 6: Final answer
    x = 11,746.97

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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.