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Finding the Fourth Proportional to 18,924.66, 28,362.06 and 8,382.09

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Solution

The fourth proportional to 18,924.66, 28,362.06 and 8,382.09 is: 12,562.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.66 : 28,362.06 = 8,382.09 : x
  2. Step 2: Convert to fraction form
    18,924.66/28,362.06 = 8,382.09/x
  3. Step 3: Cross multiply
    18,924.66x = 28,362.06 × 8,382.09
  4. Step 4: Simplify right side
    18,924.66x = 237,733,339.51
  5. Step 5: Solve for x
    x = 237,733,339.51/18,924.66
  6. Step 6: Final answer
    x = 12,562.09

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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.