Home / 19,910.92-29,866.38-8,211.28

Finding the Fourth Proportional to 19,910.92, 29,866.38 and 8,211.28

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Solution

The fourth proportional to 19,910.92, 29,866.38 and 8,211.28 is: 12,316.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.92 : 29,866.38 = 8,211.28 : x
  2. Step 2: Convert to fraction form
    19,910.92/29,866.38 = 8,211.28/x
  3. Step 3: Cross multiply
    19,910.92x = 29,866.38 × 8,211.28
  4. Step 4: Simplify right side
    19,910.92x = 245,241,208.77
  5. Step 5: Solve for x
    x = 245,241,208.77/19,910.92
  6. Step 6: Final answer
    x = 12,316.92

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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.