Home / 20,089.13-27,722.22-11,136.78

Finding the Fourth Proportional to 20,089.13, 27,722.22 and 11,136.78

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Solution

The fourth proportional to 20,089.13, 27,722.22 and 11,136.78 is: 15,368.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.13 : 27,722.22 = 11,136.78 : x
  2. Step 2: Convert to fraction form
    20,089.13/27,722.22 = 11,136.78/x
  3. Step 3: Cross multiply
    20,089.13x = 27,722.22 × 11,136.78
  4. Step 4: Simplify right side
    20,089.13x = 308,736,265.25
  5. Step 5: Solve for x
    x = 308,736,265.25/20,089.13
  6. Step 6: Final answer
    x = 15,368.33

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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.