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Finding the Fourth Proportional to 28,546.72, 42,804.36 and 8,819.80

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Solution

The fourth proportional to 28,546.72, 42,804.36 and 8,819.80 is: 13,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.72 : 42,804.36 = 8,819.80 : x
  2. Step 2: Convert to fraction form
    28,546.72/42,804.36 = 8,819.80/x
  3. Step 3: Cross multiply
    28,546.72x = 42,804.36 × 8,819.80
  4. Step 4: Simplify right side
    28,546.72x = 377,525,894.33
  5. Step 5: Solve for x
    x = 377,525,894.33/28,546.72
  6. Step 6: Final answer
    x = 13,224.84

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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.