Home / 12,138.06-18,206.32-4,240.02

Finding the Fourth Proportional to 12,138.06, 18,206.32 and 4,240.02

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Solution

The fourth proportional to 12,138.06, 18,206.32 and 4,240.02 is: 6,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.06 : 18,206.32 = 4,240.02 : x
  2. Step 2: Convert to fraction form
    12,138.06/18,206.32 = 4,240.02/x
  3. Step 3: Cross multiply
    12,138.06x = 18,206.32 × 4,240.02
  4. Step 4: Simplify right side
    12,138.06x = 77,195,160.93
  5. Step 5: Solve for x
    x = 77,195,160.93/12,138.06
  6. Step 6: Final answer
    x = 6,359.76

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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.