Home / 11,937.78-17,899.38-4,915.62

Finding the Fourth Proportional to 11,937.78, 17,899.38 and 4,915.62

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Solution

The fourth proportional to 11,937.78, 17,899.38 and 4,915.62 is: 7,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,937.78 : 17,899.38 = 4,915.62 : x
  2. Step 2: Convert to fraction form
    11,937.78/17,899.38 = 4,915.62/x
  3. Step 3: Cross multiply
    11,937.78x = 17,899.38 × 4,915.62
  4. Step 4: Simplify right side
    11,937.78x = 87,986,550.32
  5. Step 5: Solve for x
    x = 87,986,550.32/11,937.78
  6. Step 6: Final answer
    x = 7,370.43

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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.