Home / 30,690.26-42,357.62-19,365.95

Finding the Fourth Proportional to 30,690.26, 42,357.62 and 19,365.95

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Solution

The fourth proportional to 30,690.26, 42,357.62 and 19,365.95 is: 26,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690.26 : 42,357.62 = 19,365.95 : x
  2. Step 2: Convert to fraction form
    30,690.26/42,357.62 = 19,365.95/x
  3. Step 3: Cross multiply
    30,690.26x = 42,357.62 × 19,365.95
  4. Step 4: Simplify right side
    30,690.26x = 820,295,705.35
  5. Step 5: Solve for x
    x = 820,295,705.35/30,690.26
  6. Step 6: Final answer
    x = 26,728.21

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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.