Home / 21,819.28-32,719.60-8,301.59

Finding the Fourth Proportional to 21,819.28, 32,719.60 and 8,301.59

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Solution

The fourth proportional to 21,819.28, 32,719.60 and 8,301.59 is: 12,448.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.28 : 32,719.60 = 8,301.59 : x
  2. Step 2: Convert to fraction form
    21,819.28/32,719.60 = 8,301.59/x
  3. Step 3: Cross multiply
    21,819.28x = 32,719.60 × 8,301.59
  4. Step 4: Simplify right side
    21,819.28x = 271,624,662.66
  5. Step 5: Solve for x
    x = 271,624,662.66/21,819.28
  6. Step 6: Final answer
    x = 12,448.84

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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.