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Finding the Fourth Proportional to 21,900.78, 32,843.88 and 12,044.70

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Solution

The fourth proportional to 21,900.78, 32,843.88 and 12,044.70 is: 18,063.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.78 : 32,843.88 = 12,044.70 : x
  2. Step 2: Convert to fraction form
    21,900.78/32,843.88 = 12,044.70/x
  3. Step 3: Cross multiply
    21,900.78x = 32,843.88 × 12,044.70
  4. Step 4: Simplify right side
    21,900.78x = 395,594,681.44
  5. Step 5: Solve for x
    x = 395,594,681.44/21,900.78
  6. Step 6: Final answer
    x = 18,063.04

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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.