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Finding the Fourth Proportional to 20,037.92, 30,052.76 and 12,656.79

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Solution

The fourth proportional to 20,037.92, 30,052.76 and 12,656.79 is: 18,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037.92 : 30,052.76 = 12,656.79 : x
  2. Step 2: Convert to fraction form
    20,037.92/30,052.76 = 12,656.79/x
  3. Step 3: Cross multiply
    20,037.92x = 30,052.76 × 12,656.79
  4. Step 4: Simplify right side
    20,037.92x = 380,371,408.96
  5. Step 5: Solve for x
    x = 380,371,408.96/20,037.92
  6. Step 6: Final answer
    x = 18,982.58

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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.