Home / 12,084.16-18,125.60-3,318.40

Finding the Fourth Proportional to 12,084.16, 18,125.60 and 3,318.40

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Solution

The fourth proportional to 12,084.16, 18,125.60 and 3,318.40 is: 4,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.16 : 18,125.60 = 3,318.40 : x
  2. Step 2: Convert to fraction form
    12,084.16/18,125.60 = 3,318.40/x
  3. Step 3: Cross multiply
    12,084.16x = 18,125.60 × 3,318.40
  4. Step 4: Simplify right side
    12,084.16x = 60,147,991.04
  5. Step 5: Solve for x
    x = 60,147,991.04/12,084.16
  6. Step 6: Final answer
    x = 4,977.42

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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.