Home / 20,447.09-28,217.10-11,494.52

Finding the Fourth Proportional to 20,447.09, 28,217.10 and 11,494.52

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Solution

The fourth proportional to 20,447.09, 28,217.10 and 11,494.52 is: 15,862.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.09 : 28,217.10 = 11,494.52 : x
  2. Step 2: Convert to fraction form
    20,447.09/28,217.10 = 11,494.52/x
  3. Step 3: Cross multiply
    20,447.09x = 28,217.10 × 11,494.52
  4. Step 4: Simplify right side
    20,447.09x = 324,341,922.31
  5. Step 5: Solve for x
    x = 324,341,922.31/20,447.09
  6. Step 6: Final answer
    x = 15,862.50

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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.