Home / 21,213.12-31,819.68-7,362.24

Finding the Fourth Proportional to 21,213.12, 31,819.68 and 7,362.24

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Solution

The fourth proportional to 21,213.12, 31,819.68 and 7,362.24 is: 11,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.12 : 31,819.68 = 7,362.24 : x
  2. Step 2: Convert to fraction form
    21,213.12/31,819.68 = 7,362.24/x
  3. Step 3: Cross multiply
    21,213.12x = 31,819.68 × 7,362.24
  4. Step 4: Simplify right side
    21,213.12x = 234,264,120.88
  5. Step 5: Solve for x
    x = 234,264,120.88/21,213.12
  6. Step 6: Final answer
    x = 11,043.36

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1.5x scale

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.