Home / 11,712.87-17,566.56-3,390.66

Finding the Fourth Proportional to 11,712.87, 17,566.56 and 3,390.66

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Solution

The fourth proportional to 11,712.87, 17,566.56 and 3,390.66 is: 5,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.87 : 17,566.56 = 3,390.66 : x
  2. Step 2: Convert to fraction form
    11,712.87/17,566.56 = 3,390.66/x
  3. Step 3: Cross multiply
    11,712.87x = 17,566.56 × 3,390.66
  4. Step 4: Simplify right side
    11,712.87x = 59,562,232.33
  5. Step 5: Solve for x
    x = 59,562,232.33/11,712.87
  6. Step 6: Final answer
    x = 5,085.20

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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.