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Finding the Fourth Proportional to 28,903.10, 43,358.78 and 8,914.27

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Solution

The fourth proportional to 28,903.10, 43,358.78 and 8,914.27 is: 13,372.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.10 : 43,358.78 = 8,914.27 : x
  2. Step 2: Convert to fraction form
    28,903.10/43,358.78 = 8,914.27/x
  3. Step 3: Cross multiply
    28,903.10x = 43,358.78 × 8,914.27
  4. Step 4: Simplify right side
    28,903.10x = 386,511,871.79
  5. Step 5: Solve for x
    x = 386,511,871.79/28,903.10
  6. Step 6: Final answer
    x = 13,372.68

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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.