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Finding the Fourth Proportional to 21,342.54, 32,013.81 and 8,187.73

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Solution

The fourth proportional to 21,342.54, 32,013.81 and 8,187.73 is: 12,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.54 : 32,013.81 = 8,187.73 : x
  2. Step 2: Convert to fraction form
    21,342.54/32,013.81 = 8,187.73/x
  3. Step 3: Cross multiply
    21,342.54x = 32,013.81 × 8,187.73
  4. Step 4: Simplify right side
    21,342.54x = 262,120,432.55
  5. Step 5: Solve for x
    x = 262,120,432.55/21,342.54
  6. Step 6: Final answer
    x = 12,281.60

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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.