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Finding the Fourth Proportional to 15,620.64, 21,556.05 and 8,546.61

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Solution

The fourth proportional to 15,620.64, 21,556.05 and 8,546.61 is: 11,794.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.64 : 21,556.05 = 8,546.61 : x
  2. Step 2: Convert to fraction form
    15,620.64/21,556.05 = 8,546.61/x
  3. Step 3: Cross multiply
    15,620.64x = 21,556.05 × 8,546.61
  4. Step 4: Simplify right side
    15,620.64x = 184,231,152.49
  5. Step 5: Solve for x
    x = 184,231,152.49/15,620.64
  6. Step 6: Final answer
    x = 11,794.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.