Home / 30,028.12-41,438.82-16,780.12

Finding the Fourth Proportional to 30,028.12, 41,438.82 and 16,780.12

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Solution

The fourth proportional to 30,028.12, 41,438.82 and 16,780.12 is: 23,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.12 : 41,438.82 = 16,780.12 : x
  2. Step 2: Convert to fraction form
    30,028.12/41,438.82 = 16,780.12/x
  3. Step 3: Cross multiply
    30,028.12x = 41,438.82 × 16,780.12
  4. Step 4: Simplify right side
    30,028.12x = 695,348,372.26
  5. Step 5: Solve for x
    x = 695,348,372.26/30,028.12
  6. Step 6: Final answer
    x = 23,156.57

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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.