Home / 11,215.95-16,823.78-3,424.80

Finding the Fourth Proportional to 11,215.95, 16,823.78 and 3,424.80

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Solution

The fourth proportional to 11,215.95, 16,823.78 and 3,424.80 is: 5,137.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.95 : 16,823.78 = 3,424.80 : x
  2. Step 2: Convert to fraction form
    11,215.95/16,823.78 = 3,424.80/x
  3. Step 3: Cross multiply
    11,215.95x = 16,823.78 × 3,424.80
  4. Step 4: Simplify right side
    11,215.95x = 57,618,064.62
  5. Step 5: Solve for x
    x = 57,618,064.62/11,215.95
  6. Step 6: Final answer
    x = 5,137.15

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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.