Home / 13,123.14-18,131.22-11,694.30

Finding the Fourth Proportional to 13,123.14, 18,131.22 and 11,694.30

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Solution

The fourth proportional to 13,123.14, 18,131.22 and 11,694.30 is: 16,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.14 : 18,131.22 = 11,694.30 : x
  2. Step 2: Convert to fraction form
    13,123.14/18,131.22 = 11,694.30/x
  3. Step 3: Cross multiply
    13,123.14x = 18,131.22 × 11,694.30
  4. Step 4: Simplify right side
    13,123.14x = 212,031,926.05
  5. Step 5: Solve for x
    x = 212,031,926.05/13,123.14
  6. Step 6: Final answer
    x = 16,157.10

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1.5x scale

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.