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Finding the Fourth Proportional to 18,671.89, 28,013.30 and 5,524.60

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Solution

The fourth proportional to 18,671.89, 28,013.30 and 5,524.60 is: 8,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.89 : 28,013.30 = 5,524.60 : x
  2. Step 2: Convert to fraction form
    18,671.89/28,013.30 = 5,524.60/x
  3. Step 3: Cross multiply
    18,671.89x = 28,013.30 × 5,524.60
  4. Step 4: Simplify right side
    18,671.89x = 154,762,277.18
  5. Step 5: Solve for x
    x = 154,762,277.18/18,671.89
  6. Step 6: Final answer
    x = 8,288.52

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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.