Home / 12,761.72-19,135.38-3,994.28

Finding the Fourth Proportional to 12,761.72, 19,135.38 and 3,994.28

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Solution

The fourth proportional to 12,761.72, 19,135.38 and 3,994.28 is: 5,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.72 : 19,135.38 = 3,994.28 : x
  2. Step 2: Convert to fraction form
    12,761.72/19,135.38 = 3,994.28/x
  3. Step 3: Cross multiply
    12,761.72x = 19,135.38 × 3,994.28
  4. Step 4: Simplify right side
    12,761.72x = 76,432,065.63
  5. Step 5: Solve for x
    x = 76,432,065.63/12,761.72
  6. Step 6: Final answer
    x = 5,989.17

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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.