Home / 20,572.22-28,388.40-11,620.10

Finding the Fourth Proportional to 20,572.22, 28,388.40 and 11,620.10

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Solution

The fourth proportional to 20,572.22, 28,388.40 and 11,620.10 is: 16,035.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.22 : 28,388.40 = 11,620.10 : x
  2. Step 2: Convert to fraction form
    20,572.22/28,388.40 = 11,620.10/x
  3. Step 3: Cross multiply
    20,572.22x = 28,388.40 × 11,620.10
  4. Step 4: Simplify right side
    20,572.22x = 329,876,046.84
  5. Step 5: Solve for x
    x = 329,876,046.84/20,572.22
  6. Step 6: Final answer
    x = 16,035.02

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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.