Home / 12,189.19-18,283.79-3,424.41

Finding the Fourth Proportional to 12,189.19, 18,283.79 and 3,424.41

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Solution

The fourth proportional to 12,189.19, 18,283.79 and 3,424.41 is: 5,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.19 : 18,283.79 = 3,424.41 : x
  2. Step 2: Convert to fraction form
    12,189.19/18,283.79 = 3,424.41/x
  3. Step 3: Cross multiply
    12,189.19x = 18,283.79 × 3,424.41
  4. Step 4: Simplify right side
    12,189.19x = 62,611,084.77
  5. Step 5: Solve for x
    x = 62,611,084.77/12,189.19
  6. Step 6: Final answer
    x = 5,136.61

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Double scale
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Similar ratio
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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.