Home / 12,123.48-18,185.21-3,358.39

Finding the Fourth Proportional to 12,123.48, 18,185.21 and 3,358.39

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Solution

The fourth proportional to 12,123.48, 18,185.21 and 3,358.39 is: 5,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.48 : 18,185.21 = 3,358.39 : x
  2. Step 2: Convert to fraction form
    12,123.48/18,185.21 = 3,358.39/x
  3. Step 3: Cross multiply
    12,123.48x = 18,185.21 × 3,358.39
  4. Step 4: Simplify right side
    12,123.48x = 61,072,936.49
  5. Step 5: Solve for x
    x = 61,072,936.49/12,123.48
  6. Step 6: Final answer
    x = 5,037.58

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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.