Home / 20,600.39-28,428.22-11,647.60

Finding the Fourth Proportional to 20,600.39, 28,428.22 and 11,647.60

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Solution

The fourth proportional to 20,600.39, 28,428.22 and 11,647.60 is: 16,073.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.39 : 28,428.22 = 11,647.60 : x
  2. Step 2: Convert to fraction form
    20,600.39/28,428.22 = 11,647.60/x
  3. Step 3: Cross multiply
    20,600.39x = 28,428.22 × 11,647.60
  4. Step 4: Simplify right side
    20,600.39x = 331,120,478.76
  5. Step 5: Solve for x
    x = 331,120,478.76/20,600.39
  6. Step 6: Final answer
    x = 16,073.50

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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.