Home / 12,189.58-18,285.46-3,424.43

Finding the Fourth Proportional to 12,189.58, 18,285.46 and 3,424.43

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Solution

The fourth proportional to 12,189.58, 18,285.46 and 3,424.43 is: 5,136.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.58 : 18,285.46 = 3,424.43 : x
  2. Step 2: Convert to fraction form
    12,189.58/18,285.46 = 3,424.43/x
  3. Step 3: Cross multiply
    12,189.58x = 18,285.46 × 3,424.43
  4. Step 4: Simplify right side
    12,189.58x = 62,617,314.94
  5. Step 5: Solve for x
    x = 62,617,314.94/12,189.58
  6. Step 6: Final answer
    x = 5,136.96

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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.