Home / 12,155.45-18,235.62-3,836.25

Finding the Fourth Proportional to 12,155.45, 18,235.62 and 3,836.25

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Solution

The fourth proportional to 12,155.45, 18,235.62 and 3,836.25 is: 5,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.45 : 18,235.62 = 3,836.25 : x
  2. Step 2: Convert to fraction form
    12,155.45/18,235.62 = 3,836.25/x
  3. Step 3: Cross multiply
    12,155.45x = 18,235.62 × 3,836.25
  4. Step 4: Simplify right side
    12,155.45x = 69,956,397.23
  5. Step 5: Solve for x
    x = 69,956,397.23/12,155.45
  6. Step 6: Final answer
    x = 5,755.15

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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.