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Finding the Fourth Proportional to 20,040.70, 30,063.78 and 8,351.18

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Solution

The fourth proportional to 20,040.70, 30,063.78 and 8,351.18 is: 12,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.70 : 30,063.78 = 8,351.18 : x
  2. Step 2: Convert to fraction form
    20,040.70/30,063.78 = 8,351.18/x
  3. Step 3: Cross multiply
    20,040.70x = 30,063.78 × 8,351.18
  4. Step 4: Simplify right side
    20,040.70x = 251,068,038.26
  5. Step 5: Solve for x
    x = 251,068,038.26/20,040.70
  6. Step 6: Final answer
    x = 12,527.91

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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.