Home / 18,284.85-27,428.29-5,136.19

Finding the Fourth Proportional to 18,284.85, 27,428.29 and 5,136.19

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Solution

The fourth proportional to 18,284.85, 27,428.29 and 5,136.19 is: 7,704.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,284.85 : 27,428.29 = 5,136.19 : x
  2. Step 2: Convert to fraction form
    18,284.85/27,428.29 = 5,136.19/x
  3. Step 3: Cross multiply
    18,284.85x = 27,428.29 × 5,136.19
  4. Step 4: Simplify right side
    18,284.85x = 140,876,827.40
  5. Step 5: Solve for x
    x = 140,876,827.40/18,284.85
  6. Step 6: Final answer
    x = 7,704.57

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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.