Home / 19,286.75-28,936.40-8,755.53

Finding the Fourth Proportional to 19,286.75, 28,936.40 and 8,755.53

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Solution

The fourth proportional to 19,286.75, 28,936.40 and 8,755.53 is: 13,136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.75 : 28,936.40 = 8,755.53 : x
  2. Step 2: Convert to fraction form
    19,286.75/28,936.40 = 8,755.53/x
  3. Step 3: Cross multiply
    19,286.75x = 28,936.40 × 8,755.53
  4. Step 4: Simplify right side
    19,286.75x = 253,353,474.51
  5. Step 5: Solve for x
    x = 253,353,474.51/19,286.75
  6. Step 6: Final answer
    x = 13,136.14

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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.