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Finding the Fourth Proportional to 21,801.35, 32,704.46 and 8,655.05

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Solution

The fourth proportional to 21,801.35, 32,704.46 and 8,655.05 is: 12,983.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.35 : 32,704.46 = 8,655.05 : x
  2. Step 2: Convert to fraction form
    21,801.35/32,704.46 = 8,655.05/x
  3. Step 3: Cross multiply
    21,801.35x = 32,704.46 × 8,655.05
  4. Step 4: Simplify right side
    21,801.35x = 283,058,736.52
  5. Step 5: Solve for x
    x = 283,058,736.52/21,801.35
  6. Step 6: Final answer
    x = 12,983.54

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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.