Home / 10,812.36-16,220.89-3,315.95

Finding the Fourth Proportional to 10,812.36, 16,220.89 and 3,315.95

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Solution

The fourth proportional to 10,812.36, 16,220.89 and 3,315.95 is: 4,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.36 : 16,220.89 = 3,315.95 : x
  2. Step 2: Convert to fraction form
    10,812.36/16,220.89 = 3,315.95/x
  3. Step 3: Cross multiply
    10,812.36x = 16,220.89 × 3,315.95
  4. Step 4: Simplify right side
    10,812.36x = 53,787,660.20
  5. Step 5: Solve for x
    x = 53,787,660.20/10,812.36
  6. Step 6: Final answer
    x = 4,974.65

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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.