Home / 12,086.10-18,138.15-6,239.70

Finding the Fourth Proportional to 12,086.10, 18,138.15 and 6,239.70

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Solution

The fourth proportional to 12,086.10, 18,138.15 and 6,239.70 is: 9,364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.10 : 18,138.15 = 6,239.70 : x
  2. Step 2: Convert to fraction form
    12,086.10/18,138.15 = 6,239.70/x
  3. Step 3: Cross multiply
    12,086.10x = 18,138.15 × 6,239.70
  4. Step 4: Simplify right side
    12,086.10x = 113,176,614.56
  5. Step 5: Solve for x
    x = 113,176,614.56/12,086.10
  6. Step 6: Final answer
    x = 9,364.20

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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.