Home / 20,755.62-28,623.42-13,669.74

Finding the Fourth Proportional to 20,755.62, 28,623.42 and 13,669.74

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Solution

The fourth proportional to 20,755.62, 28,623.42 and 13,669.74 is: 18,851.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.62 : 28,623.42 = 13,669.74 : x
  2. Step 2: Convert to fraction form
    20,755.62/28,623.42 = 13,669.74/x
  3. Step 3: Cross multiply
    20,755.62x = 28,623.42 × 13,669.74
  4. Step 4: Simplify right side
    20,755.62x = 391,274,709.31
  5. Step 5: Solve for x
    x = 391,274,709.31/20,755.62
  6. Step 6: Final answer
    x = 18,851.51

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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.