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Finding the Fourth Proportional to 28,335.96, 42,504 and 8,614.56

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Solution

The fourth proportional to 28,335.96, 42,504 and 8,614.56 is: 12,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.96 : 42,504 = 8,614.56 : x
  2. Step 2: Convert to fraction form
    28,335.96/42,504 = 8,614.56/x
  3. Step 3: Cross multiply
    28,335.96x = 42,504 × 8,614.56
  4. Step 4: Simplify right side
    28,335.96x = 366,153,258.24
  5. Step 5: Solve for x
    x = 366,153,258.24/28,335.96
  6. Step 6: Final answer
    x = 12,921.86

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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.