Home / 11,511.11-15,868.64-7,623.99

Finding the Fourth Proportional to 11,511.11, 15,868.64 and 7,623.99

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Solution

The fourth proportional to 11,511.11, 15,868.64 and 7,623.99 is: 10,510.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.11 : 15,868.64 = 7,623.99 : x
  2. Step 2: Convert to fraction form
    11,511.11/15,868.64 = 7,623.99/x
  3. Step 3: Cross multiply
    11,511.11x = 15,868.64 × 7,623.99
  4. Step 4: Simplify right side
    11,511.11x = 120,982,371.73
  5. Step 5: Solve for x
    x = 120,982,371.73/11,511.11
  6. Step 6: Final answer
    x = 10,510.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.