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Finding the Fourth Proportional to 28,364.50, 42,553.08 and 8,644.60

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Solution

The fourth proportional to 28,364.50, 42,553.08 and 8,644.60 is: 12,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.50 : 42,553.08 = 8,644.60 : x
  2. Step 2: Convert to fraction form
    28,364.50/42,553.08 = 8,644.60/x
  3. Step 3: Cross multiply
    28,364.50x = 42,553.08 × 8,644.60
  4. Step 4: Simplify right side
    28,364.50x = 367,854,355.37
  5. Step 5: Solve for x
    x = 367,854,355.37/28,364.50
  6. Step 6: Final answer
    x = 12,968.83

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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.