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Finding the Fourth Proportional to 15,562.98, 21,473.10 and 8,847

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Solution

The fourth proportional to 15,562.98, 21,473.10 and 8,847 is: 12,206.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,562.98 : 21,473.10 = 8,847 : x
  2. Step 2: Convert to fraction form
    15,562.98/21,473.10 = 8,847/x
  3. Step 3: Cross multiply
    15,562.98x = 21,473.10 × 8,847
  4. Step 4: Simplify right side
    15,562.98x = 189,972,515.70
  5. Step 5: Solve for x
    x = 189,972,515.70/15,562.98
  6. Step 6: Final answer
    x = 12,206.69

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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.