Home / 10,916.90-16,375.49-3,521.40

Finding the Fourth Proportional to 10,916.90, 16,375.49 and 3,521.40

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Solution

The fourth proportional to 10,916.90, 16,375.49 and 3,521.40 is: 5,282.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.90 : 16,375.49 = 3,521.40 : x
  2. Step 2: Convert to fraction form
    10,916.90/16,375.49 = 3,521.40/x
  3. Step 3: Cross multiply
    10,916.90x = 16,375.49 × 3,521.40
  4. Step 4: Simplify right side
    10,916.90x = 57,664,632.88
  5. Step 5: Solve for x
    x = 57,664,632.88/10,916.90
  6. Step 6: Final answer
    x = 5,282.15

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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.