Home / 11,138.29-16,713.98-4,123.28

Finding the Fourth Proportional to 11,138.29, 16,713.98 and 4,123.28

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Solution

The fourth proportional to 11,138.29, 16,713.98 and 4,123.28 is: 6,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.29 : 16,713.98 = 4,123.28 : x
  2. Step 2: Convert to fraction form
    11,138.29/16,713.98 = 4,123.28/x
  3. Step 3: Cross multiply
    11,138.29x = 16,713.98 × 4,123.28
  4. Step 4: Simplify right side
    11,138.29x = 68,916,419.45
  5. Step 5: Solve for x
    x = 68,916,419.45/11,138.29
  6. Step 6: Final answer
    x = 6,187.34

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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.