Home / 10,511.62-15,765.76-2,911.11

Finding the Fourth Proportional to 10,511.62, 15,765.76 and 2,911.11

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Solution

The fourth proportional to 10,511.62, 15,765.76 and 2,911.11 is: 4,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.62 : 15,765.76 = 2,911.11 : x
  2. Step 2: Convert to fraction form
    10,511.62/15,765.76 = 2,911.11/x
  3. Step 3: Cross multiply
    10,511.62x = 15,765.76 × 2,911.11
  4. Step 4: Simplify right side
    10,511.62x = 45,895,947.32
  5. Step 5: Solve for x
    x = 45,895,947.32/10,511.62
  6. Step 6: Final answer
    x = 4,366.21

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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.