Home / 20,447.18-28,217.37-11,494.16

Finding the Fourth Proportional to 20,447.18, 28,217.37 and 11,494.16

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Solution

The fourth proportional to 20,447.18, 28,217.37 and 11,494.16 is: 15,862.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.18 : 28,217.37 = 11,494.16 : x
  2. Step 2: Convert to fraction form
    20,447.18/28,217.37 = 11,494.16/x
  3. Step 3: Cross multiply
    20,447.18x = 28,217.37 × 11,494.16
  4. Step 4: Simplify right side
    20,447.18x = 324,334,965.56
  5. Step 5: Solve for x
    x = 324,334,965.56/20,447.18
  6. Step 6: Final answer
    x = 15,862.09

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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.