Home / 13,399.62-18,493.68-12,809.04

Finding the Fourth Proportional to 13,399.62, 18,493.68 and 12,809.04

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Solution

The fourth proportional to 13,399.62, 18,493.68 and 12,809.04 is: 17,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.62 : 18,493.68 = 12,809.04 : x
  2. Step 2: Convert to fraction form
    13,399.62/18,493.68 = 12,809.04/x
  3. Step 3: Cross multiply
    13,399.62x = 18,493.68 × 12,809.04
  4. Step 4: Simplify right side
    13,399.62x = 236,886,286.87
  5. Step 5: Solve for x
    x = 236,886,286.87/13,399.62
  6. Step 6: Final answer
    x = 17,678.58

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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.