Home / 10,891.35-16,338.29-4,318.11

Finding the Fourth Proportional to 10,891.35, 16,338.29 and 4,318.11

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Solution

The fourth proportional to 10,891.35, 16,338.29 and 4,318.11 is: 6,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.35 : 16,338.29 = 4,318.11 : x
  2. Step 2: Convert to fraction form
    10,891.35/16,338.29 = 4,318.11/x
  3. Step 3: Cross multiply
    10,891.35x = 16,338.29 × 4,318.11
  4. Step 4: Simplify right side
    10,891.35x = 70,550,511.84
  5. Step 5: Solve for x
    x = 70,550,511.84/10,891.35
  6. Step 6: Final answer
    x = 6,477.66

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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.