Home / 12,652.94-18,979.43-3,887.79

Finding the Fourth Proportional to 12,652.94, 18,979.43 and 3,887.79

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Solution

The fourth proportional to 12,652.94, 18,979.43 and 3,887.79 is: 5,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.94 : 18,979.43 = 3,887.79 : x
  2. Step 2: Convert to fraction form
    12,652.94/18,979.43 = 3,887.79/x
  3. Step 3: Cross multiply
    12,652.94x = 18,979.43 × 3,887.79
  4. Step 4: Simplify right side
    12,652.94x = 73,788,018.72
  5. Step 5: Solve for x
    x = 73,788,018.72/12,652.94
  6. Step 6: Final answer
    x = 5,831.69

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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.