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Finding the Fourth Proportional to 20,366.40, 30,541.40 and 8,512.41

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Solution

The fourth proportional to 20,366.40, 30,541.40 and 8,512.41 is: 12,765.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.40 : 30,541.40 = 8,512.41 : x
  2. Step 2: Convert to fraction form
    20,366.40/30,541.40 = 8,512.41/x
  3. Step 3: Cross multiply
    20,366.40x = 30,541.40 × 8,512.41
  4. Step 4: Simplify right side
    20,366.40x = 259,980,918.77
  5. Step 5: Solve for x
    x = 259,980,918.77/20,366.40
  6. Step 6: Final answer
    x = 12,765.19

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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.