Home / 30,278.89-41,761.20-19,671.94

Finding the Fourth Proportional to 30,278.89, 41,761.20 and 19,671.94

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Solution

The fourth proportional to 30,278.89, 41,761.20 and 19,671.94 is: 27,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.89 : 41,761.20 = 19,671.94 : x
  2. Step 2: Convert to fraction form
    30,278.89/41,761.20 = 19,671.94/x
  3. Step 3: Cross multiply
    30,278.89x = 41,761.20 × 19,671.94
  4. Step 4: Simplify right side
    30,278.89x = 821,523,820.73
  5. Step 5: Solve for x
    x = 821,523,820.73/30,278.89
  6. Step 6: Final answer
    x = 27,131.90

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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.