Home / 12,938.97-19,408.45-4,173.88

Finding the Fourth Proportional to 12,938.97, 19,408.45 and 4,173.88

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Solution

The fourth proportional to 12,938.97, 19,408.45 and 4,173.88 is: 6,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.97 : 19,408.45 = 4,173.88 : x
  2. Step 2: Convert to fraction form
    12,938.97/19,408.45 = 4,173.88/x
  3. Step 3: Cross multiply
    12,938.97x = 19,408.45 × 4,173.88
  4. Step 4: Simplify right side
    12,938.97x = 81,008,593.20
  5. Step 5: Solve for x
    x = 81,008,593.20/12,938.97
  6. Step 6: Final answer
    x = 6,260.82

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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.