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Finding the Fourth Proportional to 20,042.76, 30,063.24 and 6,895.20

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Solution

The fourth proportional to 20,042.76, 30,063.24 and 6,895.20 is: 10,342.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.76 : 30,063.24 = 6,895.20 : x
  2. Step 2: Convert to fraction form
    20,042.76/30,063.24 = 6,895.20/x
  3. Step 3: Cross multiply
    20,042.76x = 30,063.24 × 6,895.20
  4. Step 4: Simplify right side
    20,042.76x = 207,292,052.45
  5. Step 5: Solve for x
    x = 207,292,052.45/20,042.76
  6. Step 6: Final answer
    x = 10,342.49

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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.