Home / 12,119.64-18,181.62-4,326.63

Finding the Fourth Proportional to 12,119.64, 18,181.62 and 4,326.63

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Solution

The fourth proportional to 12,119.64, 18,181.62 and 4,326.63 is: 6,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.64 : 18,181.62 = 4,326.63 : x
  2. Step 2: Convert to fraction form
    12,119.64/18,181.62 = 4,326.63/x
  3. Step 3: Cross multiply
    12,119.64x = 18,181.62 × 4,326.63
  4. Step 4: Simplify right side
    12,119.64x = 78,665,142.54
  5. Step 5: Solve for x
    x = 78,665,142.54/12,119.64
  6. Step 6: Final answer
    x = 6,490.72

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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.