Home / 13,916.45-20,874.38-3,386.52

Finding the Fourth Proportional to 13,916.45, 20,874.38 and 3,386.52

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Solution

The fourth proportional to 13,916.45, 20,874.38 and 3,386.52 is: 5,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.45 : 20,874.38 = 3,386.52 : x
  2. Step 2: Convert to fraction form
    13,916.45/20,874.38 = 3,386.52/x
  3. Step 3: Cross multiply
    13,916.45x = 20,874.38 × 3,386.52
  4. Step 4: Simplify right side
    13,916.45x = 70,691,488.43
  5. Step 5: Solve for x
    x = 70,691,488.43/13,916.45
  6. Step 6: Final answer
    x = 5,079.71

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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.