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Finding the Fourth Proportional to 28,841.90, 43,219.02 and 21,411.50

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Solution

The fourth proportional to 28,841.90, 43,219.02 and 21,411.50 is: 32,084.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,841.90 : 43,219.02 = 21,411.50 : x
  2. Step 2: Convert to fraction form
    28,841.90/43,219.02 = 21,411.50/x
  3. Step 3: Cross multiply
    28,841.90x = 43,219.02 × 21,411.50
  4. Step 4: Simplify right side
    28,841.90x = 925,384,046.73
  5. Step 5: Solve for x
    x = 925,384,046.73/28,841.90
  6. Step 6: Final answer
    x = 32,084.71

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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.