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Finding the Fourth Proportional to 20,089, 27,722.82 and 11,707.12

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Solution

The fourth proportional to 20,089, 27,722.82 and 11,707.12 is: 16,155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089 : 27,722.82 = 11,707.12 : x
  2. Step 2: Convert to fraction form
    20,089/27,722.82 = 11,707.12/x
  3. Step 3: Cross multiply
    20,089x = 27,722.82 × 11,707.12
  4. Step 4: Simplify right side
    20,089x = 324,554,380.48
  5. Step 5: Solve for x
    x = 324,554,380.48/20,089
  6. Step 6: Final answer
    x = 16,155.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.