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Finding the Fourth Proportional to 21,675.33, 32,512.95 and 8,520.48

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Solution

The fourth proportional to 21,675.33, 32,512.95 and 8,520.48 is: 12,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.33 : 32,512.95 = 8,520.48 : x
  2. Step 2: Convert to fraction form
    21,675.33/32,512.95 = 8,520.48/x
  3. Step 3: Cross multiply
    21,675.33x = 32,512.95 × 8,520.48
  4. Step 4: Simplify right side
    21,675.33x = 277,025,940.22
  5. Step 5: Solve for x
    x = 277,025,940.22/21,675.33
  6. Step 6: Final answer
    x = 12,780.70

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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.