Home / 21,991.14-32,987.52-6,408.36

Finding the Fourth Proportional to 21,991.14, 32,987.52 and 6,408.36

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Solution

The fourth proportional to 21,991.14, 32,987.52 and 6,408.36 is: 9,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.14 : 32,987.52 = 6,408.36 : x
  2. Step 2: Convert to fraction form
    21,991.14/32,987.52 = 6,408.36/x
  3. Step 3: Cross multiply
    21,991.14x = 32,987.52 × 6,408.36
  4. Step 4: Simplify right side
    21,991.14x = 211,395,903.67
  5. Step 5: Solve for x
    x = 211,395,903.67/21,991.14
  6. Step 6: Final answer
    x = 9,612.78

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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.