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Finding the Fourth Proportional to 21,605.99, 32,381.01 and 11,067.30

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Solution

The fourth proportional to 21,605.99, 32,381.01 and 11,067.30 is: 16,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.99 : 32,381.01 = 11,067.30 : x
  2. Step 2: Convert to fraction form
    21,605.99/32,381.01 = 11,067.30/x
  3. Step 3: Cross multiply
    21,605.99x = 32,381.01 × 11,067.30
  4. Step 4: Simplify right side
    21,605.99x = 358,370,351.97
  5. Step 5: Solve for x
    x = 358,370,351.97/21,605.99
  6. Step 6: Final answer
    x = 16,586.62

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1.5x scale

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.