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Finding the Fourth Proportional to 16,013.60, 23,989.80 and 8,615.60

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Solution

The fourth proportional to 16,013.60, 23,989.80 and 8,615.60 is: 12,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,013.60 : 23,989.80 = 8,615.60 : x
  2. Step 2: Convert to fraction form
    16,013.60/23,989.80 = 8,615.60/x
  3. Step 3: Cross multiply
    16,013.60x = 23,989.80 × 8,615.60
  4. Step 4: Simplify right side
    16,013.60x = 206,686,520.88
  5. Step 5: Solve for x
    x = 206,686,520.88/16,013.60
  6. Step 6: Final answer
    x = 12,906.94

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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.