Home / 10,961.78-15,126.32-6,181.44

Finding the Fourth Proportional to 10,961.78, 15,126.32 and 6,181.44

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Solution

The fourth proportional to 10,961.78, 15,126.32 and 6,181.44 is: 8,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.78 : 15,126.32 = 6,181.44 : x
  2. Step 2: Convert to fraction form
    10,961.78/15,126.32 = 6,181.44/x
  3. Step 3: Cross multiply
    10,961.78x = 15,126.32 × 6,181.44
  4. Step 4: Simplify right side
    10,961.78x = 93,502,408.59
  5. Step 5: Solve for x
    x = 93,502,408.59/10,961.78
  6. Step 6: Final answer
    x = 8,529.86

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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.