Home / 31,188.69-43,028.13-19,231.26

Finding the Fourth Proportional to 31,188.69, 43,028.13 and 19,231.26

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Solution

The fourth proportional to 31,188.69, 43,028.13 and 19,231.26 is: 26,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,188.69 : 43,028.13 = 19,231.26 : x
  2. Step 2: Convert to fraction form
    31,188.69/43,028.13 = 19,231.26/x
  3. Step 3: Cross multiply
    31,188.69x = 43,028.13 × 19,231.26
  4. Step 4: Simplify right side
    31,188.69x = 827,485,155.34
  5. Step 5: Solve for x
    x = 827,485,155.34/31,188.69
  6. Step 6: Final answer
    x = 26,531.58

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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.