Home / 18,500.04-27,691.70-13,218.02

Finding the Fourth Proportional to 18,500.04, 27,691.70 and 13,218.02

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Solution

The fourth proportional to 18,500.04, 27,691.70 and 13,218.02 is: 19,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.04 : 27,691.70 = 13,218.02 : x
  2. Step 2: Convert to fraction form
    18,500.04/27,691.70 = 13,218.02/x
  3. Step 3: Cross multiply
    18,500.04x = 27,691.70 × 13,218.02
  4. Step 4: Simplify right side
    18,500.04x = 366,029,444.43
  5. Step 5: Solve for x
    x = 366,029,444.43/18,500.04
  6. Step 6: Final answer
    x = 19,785.33

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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.