Home / 30,796.20-42,490.86-18,855.18

Finding the Fourth Proportional to 30,796.20, 42,490.86 and 18,855.18

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Solution

The fourth proportional to 30,796.20, 42,490.86 and 18,855.18 is: 26,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,796.20 : 42,490.86 = 18,855.18 : x
  2. Step 2: Convert to fraction form
    30,796.20/42,490.86 = 18,855.18/x
  3. Step 3: Cross multiply
    30,796.20x = 42,490.86 × 18,855.18
  4. Step 4: Simplify right side
    30,796.20x = 801,172,813.65
  5. Step 5: Solve for x
    x = 801,172,813.65/30,796.20
  6. Step 6: Final answer
    x = 26,015.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.