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Finding the Fourth Proportional to 30,329.28, 45,493.60 and 7,839.84

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Solution

The fourth proportional to 30,329.28, 45,493.60 and 7,839.84 is: 11,759.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329.28 : 45,493.60 = 7,839.84 : x
  2. Step 2: Convert to fraction form
    30,329.28/45,493.60 = 7,839.84/x
  3. Step 3: Cross multiply
    30,329.28x = 45,493.60 × 7,839.84
  4. Step 4: Simplify right side
    30,329.28x = 356,662,545.02
  5. Step 5: Solve for x
    x = 356,662,545.02/30,329.28
  6. Step 6: Final answer
    x = 11,759.68

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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.