Home / 11,916.38-17,874.57-4,990.88

Finding the Fourth Proportional to 11,916.38, 17,874.57 and 4,990.88

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Solution

The fourth proportional to 11,916.38, 17,874.57 and 4,990.88 is: 7,486.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.38 : 17,874.57 = 4,990.88 : x
  2. Step 2: Convert to fraction form
    11,916.38/17,874.57 = 4,990.88/x
  3. Step 3: Cross multiply
    11,916.38x = 17,874.57 × 4,990.88
  4. Step 4: Simplify right side
    11,916.38x = 89,209,744.55
  5. Step 5: Solve for x
    x = 89,209,744.55/11,916.38
  6. Step 6: Final answer
    x = 7,486.32

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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.