Home / 15,227.43-21,012.99-8,511.72

Finding the Fourth Proportional to 15,227.43, 21,012.99 and 8,511.72

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Solution

The fourth proportional to 15,227.43, 21,012.99 and 8,511.72 is: 11,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.43 : 21,012.99 = 8,511.72 : x
  2. Step 2: Convert to fraction form
    15,227.43/21,012.99 = 8,511.72/x
  3. Step 3: Cross multiply
    15,227.43x = 21,012.99 × 8,511.72
  4. Step 4: Simplify right side
    15,227.43x = 178,856,687.24
  5. Step 5: Solve for x
    x = 178,856,687.24/15,227.43
  6. Step 6: Final answer
    x = 11,745.69

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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.