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Finding the Fourth Proportional to 31,170.66, 43,015.74 and 17,023.86

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Solution

The fourth proportional to 31,170.66, 43,015.74 and 17,023.86 is: 23,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,170.66 : 43,015.74 = 17,023.86 : x
  2. Step 2: Convert to fraction form
    31,170.66/43,015.74 = 17,023.86/x
  3. Step 3: Cross multiply
    31,170.66x = 43,015.74 × 17,023.86
  4. Step 4: Simplify right side
    31,170.66x = 732,293,935.56
  5. Step 5: Solve for x
    x = 732,293,935.56/31,170.66
  6. Step 6: Final answer
    x = 23,493.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.