Home / 12,692.20-19,037.60-4,372.02

Finding the Fourth Proportional to 12,692.20, 19,037.60 and 4,372.02

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Solution

The fourth proportional to 12,692.20, 19,037.60 and 4,372.02 is: 6,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.20 : 19,037.60 = 4,372.02 : x
  2. Step 2: Convert to fraction form
    12,692.20/19,037.60 = 4,372.02/x
  3. Step 3: Cross multiply
    12,692.20x = 19,037.60 × 4,372.02
  4. Step 4: Simplify right side
    12,692.20x = 83,232,767.95
  5. Step 5: Solve for x
    x = 83,232,767.95/12,692.20
  6. Step 6: Final answer
    x = 6,557.79

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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.