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Finding the Fourth Proportional to 14,167, 19,555.32 and 8,578

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Solution

The fourth proportional to 14,167, 19,555.32 and 8,578 is: 11,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,167 : 19,555.32 = 8,578 : x
  2. Step 2: Convert to fraction form
    14,167/19,555.32 = 8,578/x
  3. Step 3: Cross multiply
    14,167x = 19,555.32 × 8,578
  4. Step 4: Simplify right side
    14,167x = 167,745,534.96
  5. Step 5: Solve for x
    x = 167,745,534.96/14,167
  6. Step 6: Final answer
    x = 11,840.58

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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.