Home / 12,788.28-19,172.70-10,611

Finding the Fourth Proportional to 12,788.28, 19,172.70 and 10,611

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Solution

The fourth proportional to 12,788.28, 19,172.70 and 10,611 is: 15,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.28 : 19,172.70 = 10,611 : x
  2. Step 2: Convert to fraction form
    12,788.28/19,172.70 = 10,611/x
  3. Step 3: Cross multiply
    12,788.28x = 19,172.70 × 10,611
  4. Step 4: Simplify right side
    12,788.28x = 203,441,519.70
  5. Step 5: Solve for x
    x = 203,441,519.70/12,788.28
  6. Step 6: Final answer
    x = 15,908.43

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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.