Home / 20,669.40-28,524.12-11,238.24

Finding the Fourth Proportional to 20,669.40, 28,524.12 and 11,238.24

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Solution

The fourth proportional to 20,669.40, 28,524.12 and 11,238.24 is: 15,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.40 : 28,524.12 = 11,238.24 : x
  2. Step 2: Convert to fraction form
    20,669.40/28,524.12 = 11,238.24/x
  3. Step 3: Cross multiply
    20,669.40x = 28,524.12 × 11,238.24
  4. Step 4: Simplify right side
    20,669.40x = 320,560,906.35
  5. Step 5: Solve for x
    x = 320,560,906.35/20,669.40
  6. Step 6: Final answer
    x = 15,508.96

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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.