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Finding the Fourth Proportional to 21,898.98, 32,853.70 and 7,107.94

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Solution

The fourth proportional to 21,898.98, 32,853.70 and 7,107.94 is: 10,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.98 : 32,853.70 = 7,107.94 : x
  2. Step 2: Convert to fraction form
    21,898.98/32,853.70 = 7,107.94/x
  3. Step 3: Cross multiply
    21,898.98x = 32,853.70 × 7,107.94
  4. Step 4: Simplify right side
    21,898.98x = 233,522,128.38
  5. Step 5: Solve for x
    x = 233,522,128.38/21,898.98
  6. Step 6: Final answer
    x = 10,663.61

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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.