Home / 20,508.03-28,301.07-11,076.59

Finding the Fourth Proportional to 20,508.03, 28,301.07 and 11,076.59

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Solution

The fourth proportional to 20,508.03, 28,301.07 and 11,076.59 is: 15,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.03 : 28,301.07 = 11,076.59 : x
  2. Step 2: Convert to fraction form
    20,508.03/28,301.07 = 11,076.59/x
  3. Step 3: Cross multiply
    20,508.03x = 28,301.07 × 11,076.59
  4. Step 4: Simplify right side
    20,508.03x = 313,479,207.45
  5. Step 5: Solve for x
    x = 313,479,207.45/20,508.03
  6. Step 6: Final answer
    x = 15,285.68

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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.