Home / 20,506.50-28,301.22-11,556.18

Finding the Fourth Proportional to 20,506.50, 28,301.22 and 11,556.18

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Solution

The fourth proportional to 20,506.50, 28,301.22 and 11,556.18 is: 15,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.50 : 28,301.22 = 11,556.18 : x
  2. Step 2: Convert to fraction form
    20,506.50/28,301.22 = 11,556.18/x
  3. Step 3: Cross multiply
    20,506.50x = 28,301.22 × 11,556.18
  4. Step 4: Simplify right side
    20,506.50x = 327,053,992.54
  5. Step 5: Solve for x
    x = 327,053,992.54/20,506.50
  6. Step 6: Final answer
    x = 15,948.80

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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.