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Finding the Fourth Proportional to 13,572.19, 18,731.17 and 8,267.01

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Solution

The fourth proportional to 13,572.19, 18,731.17 and 8,267.01 is: 11,409.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.19 : 18,731.17 = 8,267.01 : x
  2. Step 2: Convert to fraction form
    13,572.19/18,731.17 = 8,267.01/x
  3. Step 3: Cross multiply
    13,572.19x = 18,731.17 × 8,267.01
  4. Step 4: Simplify right side
    13,572.19x = 154,850,768.65
  5. Step 5: Solve for x
    x = 154,850,768.65/13,572.19
  6. Step 6: Final answer
    x = 11,409.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.