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Finding the Fourth Proportional to 21,520.73, 32,271.98 and 8,364.11

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Solution

The fourth proportional to 21,520.73, 32,271.98 and 8,364.11 is: 12,542.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.73 : 32,271.98 = 8,364.11 : x
  2. Step 2: Convert to fraction form
    21,520.73/32,271.98 = 8,364.11/x
  3. Step 3: Cross multiply
    21,520.73x = 32,271.98 × 8,364.11
  4. Step 4: Simplify right side
    21,520.73x = 269,926,187.46
  5. Step 5: Solve for x
    x = 269,926,187.46/21,520.73
  6. Step 6: Final answer
    x = 12,542.61

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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.