Home / 18,646.20-27,969.30-13,105.80

Finding the Fourth Proportional to 18,646.20, 27,969.30 and 13,105.80

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Solution

The fourth proportional to 18,646.20, 27,969.30 and 13,105.80 is: 19,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.20 : 27,969.30 = 13,105.80 : x
  2. Step 2: Convert to fraction form
    18,646.20/27,969.30 = 13,105.80/x
  3. Step 3: Cross multiply
    18,646.20x = 27,969.30 × 13,105.80
  4. Step 4: Simplify right side
    18,646.20x = 366,560,051.94
  5. Step 5: Solve for x
    x = 366,560,051.94/18,646.20
  6. Step 6: Final answer
    x = 19,658.70

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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.