Home / 11,913.86-17,872.41-4,123.28

Finding the Fourth Proportional to 11,913.86, 17,872.41 and 4,123.28

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Solution

The fourth proportional to 11,913.86, 17,872.41 and 4,123.28 is: 6,185.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.86 : 17,872.41 = 4,123.28 : x
  2. Step 2: Convert to fraction form
    11,913.86/17,872.41 = 4,123.28/x
  3. Step 3: Cross multiply
    11,913.86x = 17,872.41 × 4,123.28
  4. Step 4: Simplify right side
    11,913.86x = 73,692,950.70
  5. Step 5: Solve for x
    x = 73,692,950.70/11,913.86
  6. Step 6: Final answer
    x = 6,185.48

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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.