Home / 13,381.49-20,067.98-12,507.91

Finding the Fourth Proportional to 13,381.49, 20,067.98 and 12,507.91

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Solution

The fourth proportional to 13,381.49, 20,067.98 and 12,507.91 is: 18,757.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.49 : 20,067.98 = 12,507.91 : x
  2. Step 2: Convert to fraction form
    13,381.49/20,067.98 = 12,507.91/x
  3. Step 3: Cross multiply
    13,381.49x = 20,067.98 × 12,507.91
  4. Step 4: Simplify right side
    13,381.49x = 251,008,487.72
  5. Step 5: Solve for x
    x = 251,008,487.72/13,381.49
  6. Step 6: Final answer
    x = 18,757.89

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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.