Home / 12,072.40-18,102.12-3,748.84

Finding the Fourth Proportional to 12,072.40, 18,102.12 and 3,748.84

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Solution

The fourth proportional to 12,072.40, 18,102.12 and 3,748.84 is: 5,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.40 : 18,102.12 = 3,748.84 : x
  2. Step 2: Convert to fraction form
    12,072.40/18,102.12 = 3,748.84/x
  3. Step 3: Cross multiply
    12,072.40x = 18,102.12 × 3,748.84
  4. Step 4: Simplify right side
    12,072.40x = 67,861,951.54
  5. Step 5: Solve for x
    x = 67,861,951.54/12,072.40
  6. Step 6: Final answer
    x = 5,621.25

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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.