Home / 20,316.92-28,037.20-11,819.20

Finding the Fourth Proportional to 20,316.92, 28,037.20 and 11,819.20

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Solution

The fourth proportional to 20,316.92, 28,037.20 and 11,819.20 is: 16,310.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.92 : 28,037.20 = 11,819.20 : x
  2. Step 2: Convert to fraction form
    20,316.92/28,037.20 = 11,819.20/x
  3. Step 3: Cross multiply
    20,316.92x = 28,037.20 × 11,819.20
  4. Step 4: Simplify right side
    20,316.92x = 331,377,274.24
  5. Step 5: Solve for x
    x = 331,377,274.24/20,316.92
  6. Step 6: Final answer
    x = 16,310.41

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1.5x scale

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.