Home / 20,242.13-27,933.32-11,289.56

Finding the Fourth Proportional to 20,242.13, 27,933.32 and 11,289.56

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Solution

The fourth proportional to 20,242.13, 27,933.32 and 11,289.56 is: 15,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.13 : 27,933.32 = 11,289.56 : x
  2. Step 2: Convert to fraction form
    20,242.13/27,933.32 = 11,289.56/x
  3. Step 3: Cross multiply
    20,242.13x = 27,933.32 × 11,289.56
  4. Step 4: Simplify right side
    20,242.13x = 315,354,780.70
  5. Step 5: Solve for x
    x = 315,354,780.70/20,242.13
  6. Step 6: Final answer
    x = 15,579.13

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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.