Home / 21,972.88-32,959.32-12,745.36

Finding the Fourth Proportional to 21,972.88, 32,959.32 and 12,745.36

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Solution

The fourth proportional to 21,972.88, 32,959.32 and 12,745.36 is: 19,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.88 : 32,959.32 = 12,745.36 : x
  2. Step 2: Convert to fraction form
    21,972.88/32,959.32 = 12,745.36/x
  3. Step 3: Cross multiply
    21,972.88x = 32,959.32 × 12,745.36
  4. Step 4: Simplify right side
    21,972.88x = 420,078,398.76
  5. Step 5: Solve for x
    x = 420,078,398.76/21,972.88
  6. Step 6: Final answer
    x = 19,118.04

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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.