Home / 20,636.22-28,478.94-11,682.54

Finding the Fourth Proportional to 20,636.22, 28,478.94 and 11,682.54

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Solution

The fourth proportional to 20,636.22, 28,478.94 and 11,682.54 is: 16,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.22 : 28,478.94 = 11,682.54 : x
  2. Step 2: Convert to fraction form
    20,636.22/28,478.94 = 11,682.54/x
  3. Step 3: Cross multiply
    20,636.22x = 28,478.94 × 11,682.54
  4. Step 4: Simplify right side
    20,636.22x = 332,706,355.71
  5. Step 5: Solve for x
    x = 332,706,355.71/20,636.22
  6. Step 6: Final answer
    x = 16,122.45

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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.