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Finding the Fourth Proportional to 11,809.72, 17,702.43 and 5,239

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Solution

The fourth proportional to 11,809.72, 17,702.43 and 5,239 is: 7,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809.72 : 17,702.43 = 5,239 : x
  2. Step 2: Convert to fraction form
    11,809.72/17,702.43 = 5,239/x
  3. Step 3: Cross multiply
    11,809.72x = 17,702.43 × 5,239
  4. Step 4: Simplify right side
    11,809.72x = 92,743,030.77
  5. Step 5: Solve for x
    x = 92,743,030.77/11,809.72
  6. Step 6: Final answer
    x = 7,853.11

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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.