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Finding the Fourth Proportional to 28,251, 42,376.51 and 22,015.68

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Solution

The fourth proportional to 28,251, 42,376.51 and 22,015.68 is: 33,023.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251 : 42,376.51 = 22,015.68 : x
  2. Step 2: Convert to fraction form
    28,251/42,376.51 = 22,015.68/x
  3. Step 3: Cross multiply
    28,251x = 42,376.51 × 22,015.68
  4. Step 4: Simplify right side
    28,251x = 932,947,573.60
  5. Step 5: Solve for x
    x = 932,947,573.60/28,251
  6. Step 6: Final answer
    x = 33,023.52

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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.