Home / 20,401.62-30,602.46-12,998.64

Finding the Fourth Proportional to 20,401.62, 30,602.46 and 12,998.64

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Solution

The fourth proportional to 20,401.62, 30,602.46 and 12,998.64 is: 19,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.62 : 30,602.46 = 12,998.64 : x
  2. Step 2: Convert to fraction form
    20,401.62/30,602.46 = 12,998.64/x
  3. Step 3: Cross multiply
    20,401.62x = 30,602.46 × 12,998.64
  4. Step 4: Simplify right side
    20,401.62x = 397,790,360.65
  5. Step 5: Solve for x
    x = 397,790,360.65/20,401.62
  6. Step 6: Final answer
    x = 19,497.98

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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.