Home / 21,650.85-32,439.30-11,772.49

Finding the Fourth Proportional to 21,650.85, 32,439.30 and 11,772.49

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Solution

The fourth proportional to 21,650.85, 32,439.30 and 11,772.49 is: 17,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,650.85 : 32,439.30 = 11,772.49 : x
  2. Step 2: Convert to fraction form
    21,650.85/32,439.30 = 11,772.49/x
  3. Step 3: Cross multiply
    21,650.85x = 32,439.30 × 11,772.49
  4. Step 4: Simplify right side
    21,650.85x = 381,891,334.86
  5. Step 5: Solve for x
    x = 381,891,334.86/21,650.85
  6. Step 6: Final answer
    x = 17,638.63

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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.