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Finding the Fourth Proportional to 30,238.79, 41,734.58 and 17,489.79

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Solution

The fourth proportional to 30,238.79, 41,734.58 and 17,489.79 is: 24,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,238.79 : 41,734.58 = 17,489.79 : x
  2. Step 2: Convert to fraction form
    30,238.79/41,734.58 = 17,489.79/x
  3. Step 3: Cross multiply
    30,238.79x = 41,734.58 × 17,489.79
  4. Step 4: Simplify right side
    30,238.79x = 729,928,952.49
  5. Step 5: Solve for x
    x = 729,928,952.49/30,238.79
  6. Step 6: Final answer
    x = 24,138.83

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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.