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Finding the Fourth Proportional to 19,369.96, 29,064.54 and 8,979.88

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Solution

The fourth proportional to 19,369.96, 29,064.54 and 8,979.88 is: 13,474.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.96 : 29,064.54 = 8,979.88 : x
  2. Step 2: Convert to fraction form
    19,369.96/29,064.54 = 8,979.88/x
  3. Step 3: Cross multiply
    19,369.96x = 29,064.54 × 8,979.88
  4. Step 4: Simplify right side
    19,369.96x = 260,996,081.46
  5. Step 5: Solve for x
    x = 260,996,081.46/19,369.96
  6. Step 6: Final answer
    x = 13,474.27

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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.