Home / 21,209.44-31,819.20-7,358.56

Finding the Fourth Proportional to 21,209.44, 31,819.20 and 7,358.56

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Solution

The fourth proportional to 21,209.44, 31,819.20 and 7,358.56 is: 11,039.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.44 : 31,819.20 = 7,358.56 : x
  2. Step 2: Convert to fraction form
    21,209.44/31,819.20 = 7,358.56/x
  3. Step 3: Cross multiply
    21,209.44x = 31,819.20 × 7,358.56
  4. Step 4: Simplify right side
    21,209.44x = 234,143,492.35
  5. Step 5: Solve for x
    x = 234,143,492.35/21,209.44
  6. Step 6: Final answer
    x = 11,039.59

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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.