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Finding the Fourth Proportional to 34,756.92, 47,961.12 and 20,607.84

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Solution

The fourth proportional to 34,756.92, 47,961.12 and 20,607.84 is: 28,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,756.92 : 47,961.12 = 20,607.84 : x
  2. Step 2: Convert to fraction form
    34,756.92/47,961.12 = 20,607.84/x
  3. Step 3: Cross multiply
    34,756.92x = 47,961.12 × 20,607.84
  4. Step 4: Simplify right side
    34,756.92x = 988,375,087.18
  5. Step 5: Solve for x
    x = 988,375,087.18/34,756.92
  6. Step 6: Final answer
    x = 28,436.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.