Home / 10,811.43-16,215.98-3,415.95

Finding the Fourth Proportional to 10,811.43, 16,215.98 and 3,415.95

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Solution

The fourth proportional to 10,811.43, 16,215.98 and 3,415.95 is: 5,123.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.43 : 16,215.98 = 3,415.95 : x
  2. Step 2: Convert to fraction form
    10,811.43/16,215.98 = 3,415.95/x
  3. Step 3: Cross multiply
    10,811.43x = 16,215.98 × 3,415.95
  4. Step 4: Simplify right side
    10,811.43x = 55,392,959.80
  5. Step 5: Solve for x
    x = 55,392,959.80/10,811.43
  6. Step 6: Final answer
    x = 5,123.56

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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.