Home / 20,195.81-27,869.56-11,243.01

Finding the Fourth Proportional to 20,195.81, 27,869.56 and 11,243.01

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Solution

The fourth proportional to 20,195.81, 27,869.56 and 11,243.01 is: 15,514.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.81 : 27,869.56 = 11,243.01 : x
  2. Step 2: Convert to fraction form
    20,195.81/27,869.56 = 11,243.01/x
  3. Step 3: Cross multiply
    20,195.81x = 27,869.56 × 11,243.01
  4. Step 4: Simplify right side
    20,195.81x = 313,337,741.78
  5. Step 5: Solve for x
    x = 313,337,741.78/20,195.81
  6. Step 6: Final answer
    x = 15,514.99

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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.