Home / 18,819.54-28,229.28-10,385.64

Finding the Fourth Proportional to 18,819.54, 28,229.28 and 10,385.64

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Solution

The fourth proportional to 18,819.54, 28,229.28 and 10,385.64 is: 15,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.54 : 28,229.28 = 10,385.64 : x
  2. Step 2: Convert to fraction form
    18,819.54/28,229.28 = 10,385.64/x
  3. Step 3: Cross multiply
    18,819.54x = 28,229.28 × 10,385.64
  4. Step 4: Simplify right side
    18,819.54x = 293,179,043.00
  5. Step 5: Solve for x
    x = 293,179,043.00/18,819.54
  6. Step 6: Final answer
    x = 15,578.44

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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.