Home / 18,961.22-28,418.77-13,416.16

Finding the Fourth Proportional to 18,961.22, 28,418.77 and 13,416.16

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Solution

The fourth proportional to 18,961.22, 28,418.77 and 13,416.16 is: 20,107.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.22 : 28,418.77 = 13,416.16 : x
  2. Step 2: Convert to fraction form
    18,961.22/28,418.77 = 13,416.16/x
  3. Step 3: Cross multiply
    18,961.22x = 28,418.77 × 13,416.16
  4. Step 4: Simplify right side
    18,961.22x = 381,270,765.32
  5. Step 5: Solve for x
    x = 381,270,765.32/18,961.22
  6. Step 6: Final answer
    x = 20,107.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.