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Finding the Fourth Proportional to 21,905.35, 32,858.03 and 8,052.55

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Solution

The fourth proportional to 21,905.35, 32,858.03 and 8,052.55 is: 12,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.35 : 32,858.03 = 8,052.55 : x
  2. Step 2: Convert to fraction form
    21,905.35/32,858.03 = 8,052.55/x
  3. Step 3: Cross multiply
    21,905.35x = 32,858.03 × 8,052.55
  4. Step 4: Simplify right side
    21,905.35x = 264,590,929.48
  5. Step 5: Solve for x
    x = 264,590,929.48/21,905.35
  6. Step 6: Final answer
    x = 12,078.83

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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.