Home / 11,723.31-16,178.21-6,418.47

Finding the Fourth Proportional to 11,723.31, 16,178.21 and 6,418.47

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Solution

The fourth proportional to 11,723.31, 16,178.21 and 6,418.47 is: 8,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,723.31 : 16,178.21 = 6,418.47 : x
  2. Step 2: Convert to fraction form
    11,723.31/16,178.21 = 6,418.47/x
  3. Step 3: Cross multiply
    11,723.31x = 16,178.21 × 6,418.47
  4. Step 4: Simplify right side
    11,723.31x = 103,839,323.45
  5. Step 5: Solve for x
    x = 103,839,323.45/11,723.31
  6. Step 6: Final answer
    x = 8,857.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.