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Finding the Fourth Proportional to 20,038.56, 30,063.24 and 6,891.18

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Solution

The fourth proportional to 20,038.56, 30,063.24 and 6,891.18 is: 10,338.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.56 : 30,063.24 = 6,891.18 : x
  2. Step 2: Convert to fraction form
    20,038.56/30,063.24 = 6,891.18/x
  3. Step 3: Cross multiply
    20,038.56x = 30,063.24 × 6,891.18
  4. Step 4: Simplify right side
    20,038.56x = 207,171,198.22
  5. Step 5: Solve for x
    x = 207,171,198.22/20,038.56
  6. Step 6: Final answer
    x = 10,338.63

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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.