Home / 20,090.25-27,722.68-11,136.99

Finding the Fourth Proportional to 20,090.25, 27,722.68 and 11,136.99

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Solution

The fourth proportional to 20,090.25, 27,722.68 and 11,136.99 is: 15,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.25 : 27,722.68 = 11,136.99 : x
  2. Step 2: Convert to fraction form
    20,090.25/27,722.68 = 11,136.99/x
  3. Step 3: Cross multiply
    20,090.25x = 27,722.68 × 11,136.99
  4. Step 4: Simplify right side
    20,090.25x = 308,747,209.93
  5. Step 5: Solve for x
    x = 308,747,209.93/20,090.25
  6. Step 6: Final answer
    x = 15,368.01

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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.