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Finding the Fourth Proportional to 19,951.93, 29,917.35 and 8,853.78

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Solution

The fourth proportional to 19,951.93, 29,917.35 and 8,853.78 is: 13,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.93 : 29,917.35 = 8,853.78 : x
  2. Step 2: Convert to fraction form
    19,951.93/29,917.35 = 8,853.78/x
  3. Step 3: Cross multiply
    19,951.93x = 29,917.35 × 8,853.78
  4. Step 4: Simplify right side
    19,951.93x = 264,881,485.50
  5. Step 5: Solve for x
    x = 264,881,485.50/19,951.93
  6. Step 6: Final answer
    x = 13,275.99

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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.