Home / 11,910.30-17,859.69-6,981.54

Finding the Fourth Proportional to 11,910.30, 17,859.69 and 6,981.54

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Solution

The fourth proportional to 11,910.30, 17,859.69 and 6,981.54 is: 10,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.30 : 17,859.69 = 6,981.54 : x
  2. Step 2: Convert to fraction form
    11,910.30/17,859.69 = 6,981.54/x
  3. Step 3: Cross multiply
    11,910.30x = 17,859.69 × 6,981.54
  4. Step 4: Simplify right side
    11,910.30x = 124,688,140.12
  5. Step 5: Solve for x
    x = 124,688,140.12/11,910.30
  6. Step 6: Final answer
    x = 10,468.93

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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.