Home / 15,215.72-20,997.44-8,501.44

Finding the Fourth Proportional to 15,215.72, 20,997.44 and 8,501.44

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Solution

The fourth proportional to 15,215.72, 20,997.44 and 8,501.44 is: 11,731.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.72 : 20,997.44 = 8,501.44 : x
  2. Step 2: Convert to fraction form
    15,215.72/20,997.44 = 8,501.44/x
  3. Step 3: Cross multiply
    15,215.72x = 20,997.44 × 8,501.44
  4. Step 4: Simplify right side
    15,215.72x = 178,508,476.31
  5. Step 5: Solve for x
    x = 178,508,476.31/15,215.72
  6. Step 6: Final answer
    x = 11,731.85

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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.