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Finding the Fourth Proportional to 21,992.58, 32,983.81 and 13,110.42

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Solution

The fourth proportional to 21,992.58, 32,983.81 and 13,110.42 is: 19,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.58 : 32,983.81 = 13,110.42 : x
  2. Step 2: Convert to fraction form
    21,992.58/32,983.81 = 13,110.42/x
  3. Step 3: Cross multiply
    21,992.58x = 32,983.81 × 13,110.42
  4. Step 4: Simplify right side
    21,992.58x = 432,431,637.03
  5. Step 5: Solve for x
    x = 432,431,637.03/21,992.58
  6. Step 6: Final answer
    x = 19,662.61

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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.