Home / 20,819.08-31,228.54-8,344.68

Finding the Fourth Proportional to 20,819.08, 31,228.54 and 8,344.68

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Solution

The fourth proportional to 20,819.08, 31,228.54 and 8,344.68 is: 12,516.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.08 : 31,228.54 = 8,344.68 : x
  2. Step 2: Convert to fraction form
    20,819.08/31,228.54 = 8,344.68/x
  3. Step 3: Cross multiply
    20,819.08x = 31,228.54 × 8,344.68
  4. Step 4: Simplify right side
    20,819.08x = 260,592,173.17
  5. Step 5: Solve for x
    x = 260,592,173.17/20,819.08
  6. Step 6: Final answer
    x = 12,516.99

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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.