Home / 20,740.22-28,620.47-11,786.54

Finding the Fourth Proportional to 20,740.22, 28,620.47 and 11,786.54

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Solution

The fourth proportional to 20,740.22, 28,620.47 and 11,786.54 is: 16,264.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.22 : 28,620.47 = 11,786.54 : x
  2. Step 2: Convert to fraction form
    20,740.22/28,620.47 = 11,786.54/x
  3. Step 3: Cross multiply
    20,740.22x = 28,620.47 × 11,786.54
  4. Step 4: Simplify right side
    20,740.22x = 337,336,314.47
  5. Step 5: Solve for x
    x = 337,336,314.47/20,740.22
  6. Step 6: Final answer
    x = 16,264.84

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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.