Home / 30,647.10-45,922.62-21,305.28

Finding the Fourth Proportional to 30,647.10, 45,922.62 and 21,305.28

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Solution

The fourth proportional to 30,647.10, 45,922.62 and 21,305.28 is: 31,924.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.10 : 45,922.62 = 21,305.28 : x
  2. Step 2: Convert to fraction form
    30,647.10/45,922.62 = 21,305.28/x
  3. Step 3: Cross multiply
    30,647.10x = 45,922.62 × 21,305.28
  4. Step 4: Simplify right side
    30,647.10x = 978,394,277.43
  5. Step 5: Solve for x
    x = 978,394,277.43/30,647.10
  6. Step 6: Final answer
    x = 31,924.53

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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.