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Finding the Fourth Proportional to 28,608.79, 42,917.28 and 10,834.66

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Solution

The fourth proportional to 28,608.79, 42,917.28 and 10,834.66 is: 16,253.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.79 : 42,917.28 = 10,834.66 : x
  2. Step 2: Convert to fraction form
    28,608.79/42,917.28 = 10,834.66/x
  3. Step 3: Cross multiply
    28,608.79x = 42,917.28 × 10,834.66
  4. Step 4: Simplify right side
    28,608.79x = 464,994,136.92
  5. Step 5: Solve for x
    x = 464,994,136.92/28,608.79
  6. Step 6: Final answer
    x = 16,253.54

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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.