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Finding the Fourth Proportional to 28,442.44, 42,671.86 and 8,723.90

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Solution

The fourth proportional to 28,442.44, 42,671.86 and 8,723.90 is: 13,088.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.44 : 42,671.86 = 8,723.90 : x
  2. Step 2: Convert to fraction form
    28,442.44/42,671.86 = 8,723.90/x
  3. Step 3: Cross multiply
    28,442.44x = 42,671.86 × 8,723.90
  4. Step 4: Simplify right side
    28,442.44x = 372,265,039.45
  5. Step 5: Solve for x
    x = 372,265,039.45/28,442.44
  6. Step 6: Final answer
    x = 13,088.37

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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.