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Finding the Fourth Proportional to 30,310.62, 41,828.06 and 20,750.27

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Solution

The fourth proportional to 30,310.62, 41,828.06 and 20,750.27 is: 28,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,310.62 : 41,828.06 = 20,750.27 : x
  2. Step 2: Convert to fraction form
    30,310.62/41,828.06 = 20,750.27/x
  3. Step 3: Cross multiply
    30,310.62x = 41,828.06 × 20,750.27
  4. Step 4: Simplify right side
    30,310.62x = 867,943,381.31
  5. Step 5: Solve for x
    x = 867,943,381.31/30,310.62
  6. Step 6: Final answer
    x = 28,634.96

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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.