Home / 18,820.30-28,230.46-13,196.06

Finding the Fourth Proportional to 18,820.30, 28,230.46 and 13,196.06

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Solution

The fourth proportional to 18,820.30, 28,230.46 and 13,196.06 is: 19,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.30 : 28,230.46 = 13,196.06 : x
  2. Step 2: Convert to fraction form
    18,820.30/28,230.46 = 13,196.06/x
  3. Step 3: Cross multiply
    18,820.30x = 28,230.46 × 13,196.06
  4. Step 4: Simplify right side
    18,820.30x = 372,530,843.99
  5. Step 5: Solve for x
    x = 372,530,843.99/18,820.30
  6. Step 6: Final answer
    x = 19,794.10

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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.