Home / 12,123.03-18,184.53-3,803.78

Finding the Fourth Proportional to 12,123.03, 18,184.53 and 3,803.78

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Solution

The fourth proportional to 12,123.03, 18,184.53 and 3,803.78 is: 5,705.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.03 : 18,184.53 = 3,803.78 : x
  2. Step 2: Convert to fraction form
    12,123.03/18,184.53 = 3,803.78/x
  3. Step 3: Cross multiply
    12,123.03x = 18,184.53 × 3,803.78
  4. Step 4: Simplify right side
    12,123.03x = 69,169,860.60
  5. Step 5: Solve for x
    x = 69,169,860.60/12,123.03
  6. Step 6: Final answer
    x = 5,705.66

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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.