Home / 13,126.78-19,694.15-4,692.18

Finding the Fourth Proportional to 13,126.78, 19,694.15 and 4,692.18

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Solution

The fourth proportional to 13,126.78, 19,694.15 and 4,692.18 is: 7,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.78 : 19,694.15 = 4,692.18 : x
  2. Step 2: Convert to fraction form
    13,126.78/19,694.15 = 4,692.18/x
  3. Step 3: Cross multiply
    13,126.78x = 19,694.15 × 4,692.18
  4. Step 4: Simplify right side
    13,126.78x = 92,408,496.75
  5. Step 5: Solve for x
    x = 92,408,496.75/13,126.78
  6. Step 6: Final answer
    x = 7,039.69

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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.