Home / 11,987.78-16,542.27-6,682.89

Finding the Fourth Proportional to 11,987.78, 16,542.27 and 6,682.89

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Solution

The fourth proportional to 11,987.78, 16,542.27 and 6,682.89 is: 9,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.78 : 16,542.27 = 6,682.89 : x
  2. Step 2: Convert to fraction form
    11,987.78/16,542.27 = 6,682.89/x
  3. Step 3: Cross multiply
    11,987.78x = 16,542.27 × 6,682.89
  4. Step 4: Simplify right side
    11,987.78x = 110,550,170.76
  5. Step 5: Solve for x
    x = 110,550,170.76/11,987.78
  6. Step 6: Final answer
    x = 9,221.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.