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Finding the Fourth Proportional to 18,819.98, 28,221.02 and 10,924.91

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Solution

The fourth proportional to 18,819.98, 28,221.02 and 10,924.91 is: 16,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.98 : 28,221.02 = 10,924.91 : x
  2. Step 2: Convert to fraction form
    18,819.98/28,221.02 = 10,924.91/x
  3. Step 3: Cross multiply
    18,819.98x = 28,221.02 × 10,924.91
  4. Step 4: Simplify right side
    18,819.98x = 308,312,274.87
  5. Step 5: Solve for x
    x = 308,312,274.87/18,819.98
  6. Step 6: Final answer
    x = 16,382.18

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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.