Home / 21,930.39-32,881.01-12,074.31

Finding the Fourth Proportional to 21,930.39, 32,881.01 and 12,074.31

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Solution

The fourth proportional to 21,930.39, 32,881.01 and 12,074.31 is: 18,103.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.39 : 32,881.01 = 12,074.31 : x
  2. Step 2: Convert to fraction form
    21,930.39/32,881.01 = 12,074.31/x
  3. Step 3: Cross multiply
    21,930.39x = 32,881.01 × 12,074.31
  4. Step 4: Simplify right side
    21,930.39x = 397,015,447.48
  5. Step 5: Solve for x
    x = 397,015,447.48/21,930.39
  6. Step 6: Final answer
    x = 18,103.44

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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.