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Finding the Fourth Proportional to 18,686.64, 28,034.69 and 6,206.73

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Solution

The fourth proportional to 18,686.64, 28,034.69 and 6,206.73 is: 9,311.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.64 : 28,034.69 = 6,206.73 : x
  2. Step 2: Convert to fraction form
    18,686.64/28,034.69 = 6,206.73/x
  3. Step 3: Cross multiply
    18,686.64x = 28,034.69 × 6,206.73
  4. Step 4: Simplify right side
    18,686.64x = 174,003,650.21
  5. Step 5: Solve for x
    x = 174,003,650.21/18,686.64
  6. Step 6: Final answer
    x = 9,311.66

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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.