Home / 21,396.80-32,091-6,603.44

Finding the Fourth Proportional to 21,396.80, 32,091 and 6,603.44

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Solution

The fourth proportional to 21,396.80, 32,091 and 6,603.44 is: 9,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.80 : 32,091 = 6,603.44 : x
  2. Step 2: Convert to fraction form
    21,396.80/32,091 = 6,603.44/x
  3. Step 3: Cross multiply
    21,396.80x = 32,091 × 6,603.44
  4. Step 4: Simplify right side
    21,396.80x = 211,910,993.04
  5. Step 5: Solve for x
    x = 211,910,993.04/21,396.80
  6. Step 6: Final answer
    x = 9,903.86

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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.