Home / 21,819.88-30,135.96-14,734

Finding the Fourth Proportional to 21,819.88, 30,135.96 and 14,734

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Solution

The fourth proportional to 21,819.88, 30,135.96 and 14,734 is: 20,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.88 : 30,135.96 = 14,734 : x
  2. Step 2: Convert to fraction form
    21,819.88/30,135.96 = 14,734/x
  3. Step 3: Cross multiply
    21,819.88x = 30,135.96 × 14,734
  4. Step 4: Simplify right side
    21,819.88x = 444,023,234.64
  5. Step 5: Solve for x
    x = 444,023,234.64/21,819.88
  6. Step 6: Final answer
    x = 20,349.48

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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.