Home / 18,145.23-27,218.30-6,458.45

Finding the Fourth Proportional to 18,145.23, 27,218.30 and 6,458.45

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Solution

The fourth proportional to 18,145.23, 27,218.30 and 6,458.45 is: 9,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.23 : 27,218.30 = 6,458.45 : x
  2. Step 2: Convert to fraction form
    18,145.23/27,218.30 = 6,458.45/x
  3. Step 3: Cross multiply
    18,145.23x = 27,218.30 × 6,458.45
  4. Step 4: Simplify right side
    18,145.23x = 175,787,861.25
  5. Step 5: Solve for x
    x = 175,787,861.25/18,145.23
  6. Step 6: Final answer
    x = 9,687.83

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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.