Home / 20,195.28-27,869.58-11,242.76

Finding the Fourth Proportional to 20,195.28, 27,869.58 and 11,242.76

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Solution

The fourth proportional to 20,195.28, 27,869.58 and 11,242.76 is: 15,515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.28 : 27,869.58 = 11,242.76 : x
  2. Step 2: Convert to fraction form
    20,195.28/27,869.58 = 11,242.76/x
  3. Step 3: Cross multiply
    20,195.28x = 27,869.58 × 11,242.76
  4. Step 4: Simplify right side
    20,195.28x = 313,330,999.24
  5. Step 5: Solve for x
    x = 313,330,999.24/20,195.28
  6. Step 6: Final answer
    x = 15,515.06

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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.