Home / 11,861.14-17,767.10-6,915.78

Finding the Fourth Proportional to 11,861.14, 17,767.10 and 6,915.78

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Solution

The fourth proportional to 11,861.14, 17,767.10 and 6,915.78 is: 10,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.14 : 17,767.10 = 6,915.78 : x
  2. Step 2: Convert to fraction form
    11,861.14/17,767.10 = 6,915.78/x
  3. Step 3: Cross multiply
    11,861.14x = 17,767.10 × 6,915.78
  4. Step 4: Simplify right side
    11,861.14x = 122,873,354.84
  5. Step 5: Solve for x
    x = 122,873,354.84/11,861.14
  6. Step 6: Final answer
    x = 10,359.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.