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Finding the Fourth Proportional to 14,917.28, 22,368.78 and 8,678.97

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Solution

The fourth proportional to 14,917.28, 22,368.78 and 8,678.97 is: 13,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,917.28 : 22,368.78 = 8,678.97 : x
  2. Step 2: Convert to fraction form
    14,917.28/22,368.78 = 8,678.97/x
  3. Step 3: Cross multiply
    14,917.28x = 22,368.78 × 8,678.97
  4. Step 4: Simplify right side
    14,917.28x = 194,137,970.56
  5. Step 5: Solve for x
    x = 194,137,970.56/14,917.28
  6. Step 6: Final answer
    x = 13,014.31

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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.