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Finding the Fourth Proportional to 28,937.44, 43,411.92 and 9,215.36

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Solution

The fourth proportional to 28,937.44, 43,411.92 and 9,215.36 is: 13,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.44 : 43,411.92 = 9,215.36 : x
  2. Step 2: Convert to fraction form
    28,937.44/43,411.92 = 9,215.36/x
  3. Step 3: Cross multiply
    28,937.44x = 43,411.92 × 9,215.36
  4. Step 4: Simplify right side
    28,937.44x = 400,056,471.09
  5. Step 5: Solve for x
    x = 400,056,471.09/28,937.44
  6. Step 6: Final answer
    x = 13,824.87

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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.