Home / 12,808.15-19,211.54-3,923.48

Finding the Fourth Proportional to 12,808.15, 19,211.54 and 3,923.48

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Solution

The fourth proportional to 12,808.15, 19,211.54 and 3,923.48 is: 5,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.15 : 19,211.54 = 3,923.48 : x
  2. Step 2: Convert to fraction form
    12,808.15/19,211.54 = 3,923.48/x
  3. Step 3: Cross multiply
    12,808.15x = 19,211.54 × 3,923.48
  4. Step 4: Simplify right side
    12,808.15x = 75,376,121.37
  5. Step 5: Solve for x
    x = 75,376,121.37/12,808.15
  6. Step 6: Final answer
    x = 5,885.01

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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.