Home / 20,089.20-27,723.33-11,136.81

Finding the Fourth Proportional to 20,089.20, 27,723.33 and 11,136.81

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Solution

The fourth proportional to 20,089.20, 27,723.33 and 11,136.81 is: 15,368.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.20 : 27,723.33 = 11,136.81 : x
  2. Step 2: Convert to fraction form
    20,089.20/27,723.33 = 11,136.81/x
  3. Step 3: Cross multiply
    20,089.20x = 27,723.33 × 11,136.81
  4. Step 4: Simplify right side
    20,089.20x = 308,749,458.78
  5. Step 5: Solve for x
    x = 308,749,458.78/20,089.20
  6. Step 6: Final answer
    x = 15,368.93

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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.