Home / 20,902.37-28,855.17-13,249.46

Finding the Fourth Proportional to 20,902.37, 28,855.17 and 13,249.46

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Solution

The fourth proportional to 20,902.37, 28,855.17 and 13,249.46 is: 18,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.37 : 28,855.17 = 13,249.46 : x
  2. Step 2: Convert to fraction form
    20,902.37/28,855.17 = 13,249.46/x
  3. Step 3: Cross multiply
    20,902.37x = 28,855.17 × 13,249.46
  4. Step 4: Simplify right side
    20,902.37x = 382,315,276.43
  5. Step 5: Solve for x
    x = 382,315,276.43/20,902.37
  6. Step 6: Final answer
    x = 18,290.53

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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.