Home / 20,994.39-31,482.32-11,131.43

Finding the Fourth Proportional to 20,994.39, 31,482.32 and 11,131.43

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Solution

The fourth proportional to 20,994.39, 31,482.32 and 11,131.43 is: 16,692.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.39 : 31,482.32 = 11,131.43 : x
  2. Step 2: Convert to fraction form
    20,994.39/31,482.32 = 11,131.43/x
  3. Step 3: Cross multiply
    20,994.39x = 31,482.32 × 11,131.43
  4. Step 4: Simplify right side
    20,994.39x = 350,443,028.25
  5. Step 5: Solve for x
    x = 350,443,028.25/20,994.39
  6. Step 6: Final answer
    x = 16,692.22

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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.