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Finding the Fourth Proportional to 18,355.91, 27,547.68 and 8,502.09

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Solution

The fourth proportional to 18,355.91, 27,547.68 and 8,502.09 is: 12,759.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.91 : 27,547.68 = 8,502.09 : x
  2. Step 2: Convert to fraction form
    18,355.91/27,547.68 = 8,502.09/x
  3. Step 3: Cross multiply
    18,355.91x = 27,547.68 × 8,502.09
  4. Step 4: Simplify right side
    18,355.91x = 234,212,854.65
  5. Step 5: Solve for x
    x = 234,212,854.65/18,355.91
  6. Step 6: Final answer
    x = 12,759.54

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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.