Home / 12,189.44-18,285.28-3,424.30

Finding the Fourth Proportional to 12,189.44, 18,285.28 and 3,424.30

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Solution

The fourth proportional to 12,189.44, 18,285.28 and 3,424.30 is: 5,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.44 : 18,285.28 = 3,424.30 : x
  2. Step 2: Convert to fraction form
    12,189.44/18,285.28 = 3,424.30/x
  3. Step 3: Cross multiply
    12,189.44x = 18,285.28 × 3,424.30
  4. Step 4: Simplify right side
    12,189.44x = 62,614,284.30
  5. Step 5: Solve for x
    x = 62,614,284.30/12,189.44
  6. Step 6: Final answer
    x = 5,136.76

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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.