Home / 20,447.82-28,209.99-11,493.27

Finding the Fourth Proportional to 20,447.82, 28,209.99 and 11,493.27

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Solution

The fourth proportional to 20,447.82, 28,209.99 and 11,493.27 is: 15,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.82 : 28,209.99 = 11,493.27 : x
  2. Step 2: Convert to fraction form
    20,447.82/28,209.99 = 11,493.27/x
  3. Step 3: Cross multiply
    20,447.82x = 28,209.99 × 11,493.27
  4. Step 4: Simplify right side
    20,447.82x = 324,225,031.77
  5. Step 5: Solve for x
    x = 324,225,031.77/20,447.82
  6. Step 6: Final answer
    x = 15,856.22

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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.