Home / 20,145.13-30,216.78-6,998.54

Finding the Fourth Proportional to 20,145.13, 30,216.78 and 6,998.54

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Solution

The fourth proportional to 20,145.13, 30,216.78 and 6,998.54 is: 10,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.13 : 30,216.78 = 6,998.54 : x
  2. Step 2: Convert to fraction form
    20,145.13/30,216.78 = 6,998.54/x
  3. Step 3: Cross multiply
    20,145.13x = 30,216.78 × 6,998.54
  4. Step 4: Simplify right side
    20,145.13x = 211,473,192.42
  5. Step 5: Solve for x
    x = 211,473,192.42/20,145.13
  6. Step 6: Final answer
    x = 10,497.49

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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.