Home / 12,123.62-18,185.42-3,358.53

Finding the Fourth Proportional to 12,123.62, 18,185.42 and 3,358.53

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Solution

The fourth proportional to 12,123.62, 18,185.42 and 3,358.53 is: 5,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.62 : 18,185.42 = 3,358.53 : x
  2. Step 2: Convert to fraction form
    12,123.62/18,185.42 = 3,358.53/x
  3. Step 3: Cross multiply
    12,123.62x = 18,185.42 × 3,358.53
  4. Step 4: Simplify right side
    12,123.62x = 61,076,287.03
  5. Step 5: Solve for x
    x = 61,076,287.03/12,123.62
  6. Step 6: Final answer
    x = 5,037.80

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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.