Home / 20,945.68-28,904.70-11,514.04

Finding the Fourth Proportional to 20,945.68, 28,904.70 and 11,514.04

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Solution

The fourth proportional to 20,945.68, 28,904.70 and 11,514.04 is: 15,889.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.68 : 28,904.70 = 11,514.04 : x
  2. Step 2: Convert to fraction form
    20,945.68/28,904.70 = 11,514.04/x
  3. Step 3: Cross multiply
    20,945.68x = 28,904.70 × 11,514.04
  4. Step 4: Simplify right side
    20,945.68x = 332,809,871.99
  5. Step 5: Solve for x
    x = 332,809,871.99/20,945.68
  6. Step 6: Final answer
    x = 15,889.19

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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.