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Finding the Fourth Proportional to 20,645.84, 30,968.90 and 5,063.46

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Solution

The fourth proportional to 20,645.84, 30,968.90 and 5,063.46 is: 7,595.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.84 : 30,968.90 = 5,063.46 : x
  2. Step 2: Convert to fraction form
    20,645.84/30,968.90 = 5,063.46/x
  3. Step 3: Cross multiply
    20,645.84x = 30,968.90 × 5,063.46
  4. Step 4: Simplify right side
    20,645.84x = 156,809,786.39
  5. Step 5: Solve for x
    x = 156,809,786.39/20,645.84
  6. Step 6: Final answer
    x = 7,595.22

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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.