Home / 20,704.86-28,553.85-13,528.26

Finding the Fourth Proportional to 20,704.86, 28,553.85 and 13,528.26

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Solution

The fourth proportional to 20,704.86, 28,553.85 and 13,528.26 is: 18,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.86 : 28,553.85 = 13,528.26 : x
  2. Step 2: Convert to fraction form
    20,704.86/28,553.85 = 13,528.26/x
  3. Step 3: Cross multiply
    20,704.86x = 28,553.85 × 13,528.26
  4. Step 4: Simplify right side
    20,704.86x = 386,283,906.80
  5. Step 5: Solve for x
    x = 386,283,906.80/20,704.86
  6. Step 6: Final answer
    x = 18,656.68

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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.