Home / 20,508.39-28,301.66-11,556.03

Finding the Fourth Proportional to 20,508.39, 28,301.66 and 11,556.03

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Solution

The fourth proportional to 20,508.39, 28,301.66 and 11,556.03 is: 15,947.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.39 : 28,301.66 = 11,556.03 : x
  2. Step 2: Convert to fraction form
    20,508.39/28,301.66 = 11,556.03/x
  3. Step 3: Cross multiply
    20,508.39x = 28,301.66 × 11,556.03
  4. Step 4: Simplify right side
    20,508.39x = 327,054,832.01
  5. Step 5: Solve for x
    x = 327,054,832.01/20,508.39
  6. Step 6: Final answer
    x = 15,947.37

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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.