Home / 18,285.10-27,428.67-5,136.44

Finding the Fourth Proportional to 18,285.10, 27,428.67 and 5,136.44

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Solution

The fourth proportional to 18,285.10, 27,428.67 and 5,136.44 is: 7,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.10 : 27,428.67 = 5,136.44 : x
  2. Step 2: Convert to fraction form
    18,285.10/27,428.67 = 5,136.44/x
  3. Step 3: Cross multiply
    18,285.10x = 27,428.67 × 5,136.44
  4. Step 4: Simplify right side
    18,285.10x = 140,885,717.73
  5. Step 5: Solve for x
    x = 140,885,717.73/18,285.10
  6. Step 6: Final answer
    x = 7,704.95

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1.5x scale

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.