Home / 30,209.05-41,687.31-16,781.15

Finding the Fourth Proportional to 30,209.05, 41,687.31 and 16,781.15

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Solution

The fourth proportional to 30,209.05, 41,687.31 and 16,781.15 is: 23,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.05 : 41,687.31 = 16,781.15 : x
  2. Step 2: Convert to fraction form
    30,209.05/41,687.31 = 16,781.15/x
  3. Step 3: Cross multiply
    30,209.05x = 41,687.31 × 16,781.15
  4. Step 4: Simplify right side
    30,209.05x = 699,561,002.21
  5. Step 5: Solve for x
    x = 699,561,002.21/30,209.05
  6. Step 6: Final answer
    x = 23,157.34

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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.