Home / 10,611.18-15,918.42-3,213.87

Finding the Fourth Proportional to 10,611.18, 15,918.42 and 3,213.87

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Solution

The fourth proportional to 10,611.18, 15,918.42 and 3,213.87 is: 4,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.18 : 15,918.42 = 3,213.87 : x
  2. Step 2: Convert to fraction form
    10,611.18/15,918.42 = 3,213.87/x
  3. Step 3: Cross multiply
    10,611.18x = 15,918.42 × 3,213.87
  4. Step 4: Simplify right side
    10,611.18x = 51,159,732.49
  5. Step 5: Solve for x
    x = 51,159,732.49/10,611.18
  6. Step 6: Final answer
    x = 4,821.30

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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.