Home / 12,138.30-18,207.45-6,233.40

Finding the Fourth Proportional to 12,138.30, 18,207.45 and 6,233.40

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Solution

The fourth proportional to 12,138.30, 18,207.45 and 6,233.40 is: 9,350.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.30 : 18,207.45 = 6,233.40 : x
  2. Step 2: Convert to fraction form
    12,138.30/18,207.45 = 6,233.40/x
  3. Step 3: Cross multiply
    12,138.30x = 18,207.45 × 6,233.40
  4. Step 4: Simplify right side
    12,138.30x = 113,494,318.83
  5. Step 5: Solve for x
    x = 113,494,318.83/12,138.30
  6. Step 6: Final answer
    x = 9,350.10

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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.