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Finding the Fourth Proportional to 28,991.82, 40,008.03 and 17,055.92

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Solution

The fourth proportional to 28,991.82, 40,008.03 and 17,055.92 is: 23,536.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.82 : 40,008.03 = 17,055.92 : x
  2. Step 2: Convert to fraction form
    28,991.82/40,008.03 = 17,055.92/x
  3. Step 3: Cross multiply
    28,991.82x = 40,008.03 × 17,055.92
  4. Step 4: Simplify right side
    28,991.82x = 682,373,859.06
  5. Step 5: Solve for x
    x = 682,373,859.06/28,991.82
  6. Step 6: Final answer
    x = 23,536.78

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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.