Home / 19,136.82-28,717.02-12,107.15

Finding the Fourth Proportional to 19,136.82, 28,717.02 and 12,107.15

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Solution

The fourth proportional to 19,136.82, 28,717.02 and 12,107.15 is: 18,168.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.82 : 28,717.02 = 12,107.15 : x
  2. Step 2: Convert to fraction form
    19,136.82/28,717.02 = 12,107.15/x
  3. Step 3: Cross multiply
    19,136.82x = 28,717.02 × 12,107.15
  4. Step 4: Simplify right side
    19,136.82x = 347,681,316.73
  5. Step 5: Solve for x
    x = 347,681,316.73/19,136.82
  6. Step 6: Final answer
    x = 18,168.19

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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.