Home / 10,997.82-15,180.35-8,774.99

Finding the Fourth Proportional to 10,997.82, 15,180.35 and 8,774.99

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Solution

The fourth proportional to 10,997.82, 15,180.35 and 8,774.99 is: 12,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,997.82 : 15,180.35 = 8,774.99 : x
  2. Step 2: Convert to fraction form
    10,997.82/15,180.35 = 8,774.99/x
  3. Step 3: Cross multiply
    10,997.82x = 15,180.35 × 8,774.99
  4. Step 4: Simplify right side
    10,997.82x = 133,207,299.67
  5. Step 5: Solve for x
    x = 133,207,299.67/10,997.82
  6. Step 6: Final answer
    x = 12,112.15

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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.