Home / 12,442.36-18,666.17-4,121.90

Finding the Fourth Proportional to 12,442.36, 18,666.17 and 4,121.90

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Solution

The fourth proportional to 12,442.36, 18,666.17 and 4,121.90 is: 6,183.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.36 : 18,666.17 = 4,121.90 : x
  2. Step 2: Convert to fraction form
    12,442.36/18,666.17 = 4,121.90/x
  3. Step 3: Cross multiply
    12,442.36x = 18,666.17 × 4,121.90
  4. Step 4: Simplify right side
    12,442.36x = 76,940,065.51
  5. Step 5: Solve for x
    x = 76,940,065.51/12,442.36
  6. Step 6: Final answer
    x = 6,183.72

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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.