Home / 20,301.39-30,408.89-11,531.79

Finding the Fourth Proportional to 20,301.39, 30,408.89 and 11,531.79

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Solution

The fourth proportional to 20,301.39, 30,408.89 and 11,531.79 is: 17,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.39 : 30,408.89 = 11,531.79 : x
  2. Step 2: Convert to fraction form
    20,301.39/30,408.89 = 11,531.79/x
  3. Step 3: Cross multiply
    20,301.39x = 30,408.89 × 11,531.79
  4. Step 4: Simplify right side
    20,301.39x = 350,668,875.95
  5. Step 5: Solve for x
    x = 350,668,875.95/20,301.39
  6. Step 6: Final answer
    x = 17,273.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.