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Finding the Fourth Proportional to 27,813.12, 41,781.12 and 21,669.12

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Solution

The fourth proportional to 27,813.12, 41,781.12 and 21,669.12 is: 32,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.12 : 41,781.12 = 21,669.12 : x
  2. Step 2: Convert to fraction form
    27,813.12/41,781.12 = 21,669.12/x
  3. Step 3: Cross multiply
    27,813.12x = 41,781.12 × 21,669.12
  4. Step 4: Simplify right side
    27,813.12x = 905,360,103.01
  5. Step 5: Solve for x
    x = 905,360,103.01/27,813.12
  6. Step 6: Final answer
    x = 32,551.55

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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.