Home / 20,089.19-27,720.51-11,136.61

Finding the Fourth Proportional to 20,089.19, 27,720.51 and 11,136.61

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Solution

The fourth proportional to 20,089.19, 27,720.51 and 11,136.61 is: 15,367.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.19 : 27,720.51 = 11,136.61 : x
  2. Step 2: Convert to fraction form
    20,089.19/27,720.51 = 11,136.61/x
  3. Step 3: Cross multiply
    20,089.19x = 27,720.51 × 11,136.61
  4. Step 4: Simplify right side
    20,089.19x = 308,712,370.27
  5. Step 5: Solve for x
    x = 308,712,370.27/20,089.19
  6. Step 6: Final answer
    x = 15,367.09

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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.