Home / 15,299.06-21,112.66-8,494.12

Finding the Fourth Proportional to 15,299.06, 21,112.66 and 8,494.12

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Solution

The fourth proportional to 15,299.06, 21,112.66 and 8,494.12 is: 11,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.06 : 21,112.66 = 8,494.12 : x
  2. Step 2: Convert to fraction form
    15,299.06/21,112.66 = 8,494.12/x
  3. Step 3: Cross multiply
    15,299.06x = 21,112.66 × 8,494.12
  4. Step 4: Simplify right side
    15,299.06x = 179,333,467.56
  5. Step 5: Solve for x
    x = 179,333,467.56/15,299.06
  6. Step 6: Final answer
    x = 11,721.86

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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.