Home / 20,945.70-28,904.04-11,514.06

Finding the Fourth Proportional to 20,945.70, 28,904.04 and 11,514.06

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Solution

The fourth proportional to 20,945.70, 28,904.04 and 11,514.06 is: 15,888.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.70 : 28,904.04 = 11,514.06 : x
  2. Step 2: Convert to fraction form
    20,945.70/28,904.04 = 11,514.06/x
  3. Step 3: Cross multiply
    20,945.70x = 28,904.04 × 11,514.06
  4. Step 4: Simplify right side
    20,945.70x = 332,802,850.80
  5. Step 5: Solve for x
    x = 332,802,850.80/20,945.70
  6. Step 6: Final answer
    x = 15,888.84

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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.