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Finding the Fourth Proportional to 21,958.98, 32,942.12 and 10,866.03

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Solution

The fourth proportional to 21,958.98, 32,942.12 and 10,866.03 is: 16,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.98 : 32,942.12 = 10,866.03 : x
  2. Step 2: Convert to fraction form
    21,958.98/32,942.12 = 10,866.03/x
  3. Step 3: Cross multiply
    21,958.98x = 32,942.12 × 10,866.03
  4. Step 4: Simplify right side
    21,958.98x = 357,950,009.85
  5. Step 5: Solve for x
    x = 357,950,009.85/21,958.98
  6. Step 6: Final answer
    x = 16,300.85

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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.