Home / 12,156.32-18,235.20-3,836.60

Finding the Fourth Proportional to 12,156.32, 18,235.20 and 3,836.60

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Solution

The fourth proportional to 12,156.32, 18,235.20 and 3,836.60 is: 5,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.32 : 18,235.20 = 3,836.60 : x
  2. Step 2: Convert to fraction form
    12,156.32/18,235.20 = 3,836.60/x
  3. Step 3: Cross multiply
    12,156.32x = 18,235.20 × 3,836.60
  4. Step 4: Simplify right side
    12,156.32x = 69,961,168.32
  5. Step 5: Solve for x
    x = 69,961,168.32/12,156.32
  6. Step 6: Final answer
    x = 5,755.13

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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.