Home / 31,781.85-43,867.46-19,837.99

Finding the Fourth Proportional to 31,781.85, 43,867.46 and 19,837.99

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Solution

The fourth proportional to 31,781.85, 43,867.46 and 19,837.99 is: 27,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.85 : 43,867.46 = 19,837.99 : x
  2. Step 2: Convert to fraction form
    31,781.85/43,867.46 = 19,837.99/x
  3. Step 3: Cross multiply
    31,781.85x = 43,867.46 × 19,837.99
  4. Step 4: Simplify right side
    31,781.85x = 870,242,225.65
  5. Step 5: Solve for x
    x = 870,242,225.65/31,781.85
  6. Step 6: Final answer
    x = 27,381.74

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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.