Home / 31,781.04-43,866.41-19,837.19

Finding the Fourth Proportional to 31,781.04, 43,866.41 and 19,837.19

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Solution

The fourth proportional to 31,781.04, 43,866.41 and 19,837.19 is: 27,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.04 : 43,866.41 = 19,837.19 : x
  2. Step 2: Convert to fraction form
    31,781.04/43,866.41 = 19,837.19/x
  3. Step 3: Cross multiply
    31,781.04x = 43,866.41 × 19,837.19
  4. Step 4: Simplify right side
    31,781.04x = 870,185,991.27
  5. Step 5: Solve for x
    x = 870,185,991.27/31,781.04
  6. Step 6: Final answer
    x = 27,380.66

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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.