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Finding the Fourth Proportional to 30,912.60, 42,609.60 and 24,187.44

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Solution

The fourth proportional to 30,912.60, 42,609.60 and 24,187.44 is: 33,339.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.60 : 42,609.60 = 24,187.44 : x
  2. Step 2: Convert to fraction form
    30,912.60/42,609.60 = 24,187.44/x
  3. Step 3: Cross multiply
    30,912.60x = 42,609.60 × 24,187.44
  4. Step 4: Simplify right side
    30,912.60x = 1,030,617,143.42
  5. Step 5: Solve for x
    x = 1,030,617,143.42/30,912.60
  6. Step 6: Final answer
    x = 33,339.71

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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.