Home / 21,122.44-29,147.70-11,690.44

Finding the Fourth Proportional to 21,122.44, 29,147.70 and 11,690.44

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Solution

The fourth proportional to 21,122.44, 29,147.70 and 11,690.44 is: 16,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.44 : 29,147.70 = 11,690.44 : x
  2. Step 2: Convert to fraction form
    21,122.44/29,147.70 = 11,690.44/x
  3. Step 3: Cross multiply
    21,122.44x = 29,147.70 × 11,690.44
  4. Step 4: Simplify right side
    21,122.44x = 340,749,437.99
  5. Step 5: Solve for x
    x = 340,749,437.99/21,122.44
  6. Step 6: Final answer
    x = 16,132.11

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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.