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Finding the Fourth Proportional to 18,458.19, 27,687.68 and 6,612.73

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Solution

The fourth proportional to 18,458.19, 27,687.68 and 6,612.73 is: 9,919.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.19 : 27,687.68 = 6,612.73 : x
  2. Step 2: Convert to fraction form
    18,458.19/27,687.68 = 6,612.73/x
  3. Step 3: Cross multiply
    18,458.19x = 27,687.68 × 6,612.73
  4. Step 4: Simplify right side
    18,458.19x = 183,091,152.17
  5. Step 5: Solve for x
    x = 183,091,152.17/18,458.19
  6. Step 6: Final answer
    x = 9,919.24

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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.