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Finding the Fourth Proportional to 20,497.01, 30,676.02 and 12,604.49

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Solution

The fourth proportional to 20,497.01, 30,676.02 and 12,604.49 is: 18,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.01 : 30,676.02 = 12,604.49 : x
  2. Step 2: Convert to fraction form
    20,497.01/30,676.02 = 12,604.49/x
  3. Step 3: Cross multiply
    20,497.01x = 30,676.02 × 12,604.49
  4. Step 4: Simplify right side
    20,497.01x = 386,655,433.95
  5. Step 5: Solve for x
    x = 386,655,433.95/20,497.01
  6. Step 6: Final answer
    x = 18,863.99

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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.