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Finding the Fourth Proportional to 19,958.08, 29,944.52 and 9,967.20

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Solution

The fourth proportional to 19,958.08, 29,944.52 and 9,967.20 is: 14,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.08 : 29,944.52 = 9,967.20 : x
  2. Step 2: Convert to fraction form
    19,958.08/29,944.52 = 9,967.20/x
  3. Step 3: Cross multiply
    19,958.08x = 29,944.52 × 9,967.20
  4. Step 4: Simplify right side
    19,958.08x = 298,463,019.74
  5. Step 5: Solve for x
    x = 298,463,019.74/19,958.08
  6. Step 6: Final answer
    x = 14,954.50

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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.