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Finding the Fourth Proportional to 18,286.12, 27,429.18 and 4,435

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Solution

The fourth proportional to 18,286.12, 27,429.18 and 4,435 is: 6,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.12 : 27,429.18 = 4,435 : x
  2. Step 2: Convert to fraction form
    18,286.12/27,429.18 = 4,435/x
  3. Step 3: Cross multiply
    18,286.12x = 27,429.18 × 4,435
  4. Step 4: Simplify right side
    18,286.12x = 121,648,413.30
  5. Step 5: Solve for x
    x = 121,648,413.30/18,286.12
  6. Step 6: Final answer
    x = 6,652.50

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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.