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Finding the Fourth Proportional to 20,338.77, 30,512.94 and 6,487.77

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Solution

The fourth proportional to 20,338.77, 30,512.94 and 6,487.77 is: 9,733.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.77 : 30,512.94 = 6,487.77 : x
  2. Step 2: Convert to fraction form
    20,338.77/30,512.94 = 6,487.77/x
  3. Step 3: Cross multiply
    20,338.77x = 30,512.94 × 6,487.77
  4. Step 4: Simplify right side
    20,338.77x = 197,960,936.74
  5. Step 5: Solve for x
    x = 197,960,936.74/20,338.77
  6. Step 6: Final answer
    x = 9,733.18

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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.