Home / 19,872.60-27,426.78-12,819.53

Finding the Fourth Proportional to 19,872.60, 27,426.78 and 12,819.53

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Solution

The fourth proportional to 19,872.60, 27,426.78 and 12,819.53 is: 17,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.60 : 27,426.78 = 12,819.53 : x
  2. Step 2: Convert to fraction form
    19,872.60/27,426.78 = 12,819.53/x
  3. Step 3: Cross multiply
    19,872.60x = 27,426.78 × 12,819.53
  4. Step 4: Simplify right side
    19,872.60x = 351,598,291.88
  5. Step 5: Solve for x
    x = 351,598,291.88/19,872.60
  6. Step 6: Final answer
    x = 17,692.62

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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.