Home / 12,757.05-19,135.61-3,872.45

Finding the Fourth Proportional to 12,757.05, 19,135.61 and 3,872.45

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Solution

The fourth proportional to 12,757.05, 19,135.61 and 3,872.45 is: 5,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.05 : 19,135.61 = 3,872.45 : x
  2. Step 2: Convert to fraction form
    12,757.05/19,135.61 = 3,872.45/x
  3. Step 3: Cross multiply
    12,757.05x = 19,135.61 × 3,872.45
  4. Step 4: Simplify right side
    12,757.05x = 74,101,692.94
  5. Step 5: Solve for x
    x = 74,101,692.94/12,757.05
  6. Step 6: Final answer
    x = 5,808.69

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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.