Home / 28,918.26-43,327.82-19,412.78

Finding the Fourth Proportional to 28,918.26, 43,327.82 and 19,412.78

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Solution

The fourth proportional to 28,918.26, 43,327.82 and 19,412.78 is: 29,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.26 : 43,327.82 = 19,412.78 : x
  2. Step 2: Convert to fraction form
    28,918.26/43,327.82 = 19,412.78/x
  3. Step 3: Cross multiply
    28,918.26x = 43,327.82 × 19,412.78
  4. Step 4: Simplify right side
    28,918.26x = 841,113,269.43
  5. Step 5: Solve for x
    x = 841,113,269.43/28,918.26
  6. Step 6: Final answer
    x = 29,085.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.