Home / 43,208.88-64,791.18-19,815

Finding the Fourth Proportional to 43,208.88, 64,791.18 and 19,815

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Solution

The fourth proportional to 43,208.88, 64,791.18 and 19,815 is: 29,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,208.88 : 64,791.18 = 19,815 : x
  2. Step 2: Convert to fraction form
    43,208.88/64,791.18 = 19,815/x
  3. Step 3: Cross multiply
    43,208.88x = 64,791.18 × 19,815
  4. Step 4: Simplify right side
    43,208.88x = 1,283,837,231.70
  5. Step 5: Solve for x
    x = 1,283,837,231.70/43,208.88
  6. Step 6: Final answer
    x = 29,712.35

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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.