Home / 12,942.64-19,409.88-5,545.11

Finding the Fourth Proportional to 12,942.64, 19,409.88 and 5,545.11

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Solution

The fourth proportional to 12,942.64, 19,409.88 and 5,545.11 is: 8,315.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.64 : 19,409.88 = 5,545.11 : x
  2. Step 2: Convert to fraction form
    12,942.64/19,409.88 = 5,545.11/x
  3. Step 3: Cross multiply
    12,942.64x = 19,409.88 × 5,545.11
  4. Step 4: Simplify right side
    12,942.64x = 107,629,872.90
  5. Step 5: Solve for x
    x = 107,629,872.90/12,942.64
  6. Step 6: Final answer
    x = 8,315.92

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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.