Home / 21,781.44-32,676.87-6,990.26

Finding the Fourth Proportional to 21,781.44, 32,676.87 and 6,990.26

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Solution

The fourth proportional to 21,781.44, 32,676.87 and 6,990.26 is: 10,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.44 : 32,676.87 = 6,990.26 : x
  2. Step 2: Convert to fraction form
    21,781.44/32,676.87 = 6,990.26/x
  3. Step 3: Cross multiply
    21,781.44x = 32,676.87 × 6,990.26
  4. Step 4: Simplify right side
    21,781.44x = 228,419,653.90
  5. Step 5: Solve for x
    x = 228,419,653.90/21,781.44
  6. Step 6: Final answer
    x = 10,486.89

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1.5x scale

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.