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Finding the Fourth Proportional to 18,818.00, 28,221.11 and 6,808.63

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Solution

The fourth proportional to 18,818.00, 28,221.11 and 6,808.63 is: 10,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.00 : 28,221.11 = 6,808.63 : x
  2. Step 2: Convert to fraction form
    18,818.00/28,221.11 = 6,808.63/x
  3. Step 3: Cross multiply
    18,818.00x = 28,221.11 × 6,808.63
  4. Step 4: Simplify right side
    18,818.00x = 192,147,149.40
  5. Step 5: Solve for x
    x = 192,147,149.40/18,818.00
  6. Step 6: Final answer
    x = 10,210.82

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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.