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Finding the Fourth Proportional to 14,472.88, 21,711.92 and 5,118.32

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Solution

The fourth proportional to 14,472.88, 21,711.92 and 5,118.32 is: 7,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,472.88 : 21,711.92 = 5,118.32 : x
  2. Step 2: Convert to fraction form
    14,472.88/21,711.92 = 5,118.32/x
  3. Step 3: Cross multiply
    14,472.88x = 21,711.92 × 5,118.32
  4. Step 4: Simplify right side
    14,472.88x = 111,128,554.37
  5. Step 5: Solve for x
    x = 111,128,554.37/14,472.88
  6. Step 6: Final answer
    x = 7,678.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.