Home / 12,189.56-18,285.39-3,424.46

Finding the Fourth Proportional to 12,189.56, 18,285.39 and 3,424.46

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Solution

The fourth proportional to 12,189.56, 18,285.39 and 3,424.46 is: 5,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.56 : 18,285.39 = 3,424.46 : x
  2. Step 2: Convert to fraction form
    12,189.56/18,285.39 = 3,424.46/x
  3. Step 3: Cross multiply
    12,189.56x = 18,285.39 × 3,424.46
  4. Step 4: Simplify right side
    12,189.56x = 62,617,495.21
  5. Step 5: Solve for x
    x = 62,617,495.21/12,189.56
  6. Step 6: Final answer
    x = 5,136.98

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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.