Home / 11,916.31-17,870.99-4,515.43

Finding the Fourth Proportional to 11,916.31, 17,870.99 and 4,515.43

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Solution

The fourth proportional to 11,916.31, 17,870.99 and 4,515.43 is: 6,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.31 : 17,870.99 = 4,515.43 : x
  2. Step 2: Convert to fraction form
    11,916.31/17,870.99 = 4,515.43/x
  3. Step 3: Cross multiply
    11,916.31x = 17,870.99 × 4,515.43
  4. Step 4: Simplify right side
    11,916.31x = 80,695,181.80
  5. Step 5: Solve for x
    x = 80,695,181.80/11,916.31
  6. Step 6: Final answer
    x = 6,771.83

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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.