Home / 11,278.40-16,916.92-3,487.20

Finding the Fourth Proportional to 11,278.40, 16,916.92 and 3,487.20

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Solution

The fourth proportional to 11,278.40, 16,916.92 and 3,487.20 is: 5,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.40 : 16,916.92 = 3,487.20 : x
  2. Step 2: Convert to fraction form
    11,278.40/16,916.92 = 3,487.20/x
  3. Step 3: Cross multiply
    11,278.40x = 16,916.92 × 3,487.20
  4. Step 4: Simplify right side
    11,278.40x = 58,992,683.42
  5. Step 5: Solve for x
    x = 58,992,683.42/11,278.40
  6. Step 6: Final answer
    x = 5,230.59

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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.