Home / 11,111.92-16,666.20-3,321.40

Finding the Fourth Proportional to 11,111.92, 16,666.20 and 3,321.40

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Solution

The fourth proportional to 11,111.92, 16,666.20 and 3,321.40 is: 4,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.92 : 16,666.20 = 3,321.40 : x
  2. Step 2: Convert to fraction form
    11,111.92/16,666.20 = 3,321.40/x
  3. Step 3: Cross multiply
    11,111.92x = 16,666.20 × 3,321.40
  4. Step 4: Simplify right side
    11,111.92x = 55,355,116.68
  5. Step 5: Solve for x
    x = 55,355,116.68/11,111.92
  6. Step 6: Final answer
    x = 4,981.60

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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.