Home / 30,728.46-42,408.45-18,799.73

Finding the Fourth Proportional to 30,728.46, 42,408.45 and 18,799.73

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Solution

The fourth proportional to 30,728.46, 42,408.45 and 18,799.73 is: 25,945.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.46 : 42,408.45 = 18,799.73 : x
  2. Step 2: Convert to fraction form
    30,728.46/42,408.45 = 18,799.73/x
  3. Step 3: Cross multiply
    30,728.46x = 42,408.45 × 18,799.73
  4. Step 4: Simplify right side
    30,728.46x = 797,267,409.72
  5. Step 5: Solve for x
    x = 797,267,409.72/30,728.46
  6. Step 6: Final answer
    x = 25,945.57

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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.