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Finding the Fourth Proportional to 20,163.74, 30,240.74 and 6,312.74

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Solution

The fourth proportional to 20,163.74, 30,240.74 and 6,312.74 is: 9,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.74 : 30,240.74 = 6,312.74 : x
  2. Step 2: Convert to fraction form
    20,163.74/30,240.74 = 6,312.74/x
  3. Step 3: Cross multiply
    20,163.74x = 30,240.74 × 6,312.74
  4. Step 4: Simplify right side
    20,163.74x = 190,901,793.61
  5. Step 5: Solve for x
    x = 190,901,793.61/20,163.74
  6. Step 6: Final answer
    x = 9,467.58

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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.