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Finding the Fourth Proportional to 31,796.66, 43,879.56 and 19,866.92

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Solution

The fourth proportional to 31,796.66, 43,879.56 and 19,866.92 is: 27,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,796.66 : 43,879.56 = 19,866.92 : x
  2. Step 2: Convert to fraction form
    31,796.66/43,879.56 = 19,866.92/x
  3. Step 3: Cross multiply
    31,796.66x = 43,879.56 × 19,866.92
  4. Step 4: Simplify right side
    31,796.66x = 871,751,488.76
  5. Step 5: Solve for x
    x = 871,751,488.76/31,796.66
  6. Step 6: Final answer
    x = 27,416.45

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1.5x scale

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.