Home / 11,927.72-17,876.12-4,899.78

Finding the Fourth Proportional to 11,927.72, 17,876.12 and 4,899.78

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Solution

The fourth proportional to 11,927.72, 17,876.12 and 4,899.78 is: 7,343.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.72 : 17,876.12 = 4,899.78 : x
  2. Step 2: Convert to fraction form
    11,927.72/17,876.12 = 4,899.78/x
  3. Step 3: Cross multiply
    11,927.72x = 17,876.12 × 4,899.78
  4. Step 4: Simplify right side
    11,927.72x = 87,589,030.75
  5. Step 5: Solve for x
    x = 87,589,030.75/11,927.72
  6. Step 6: Final answer
    x = 7,343.32

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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.