Home / 30,092.90-45,208.56-21,228.62

Finding the Fourth Proportional to 30,092.90, 45,208.56 and 21,228.62

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Solution

The fourth proportional to 30,092.90, 45,208.56 and 21,228.62 is: 31,891.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,092.90 : 45,208.56 = 21,228.62 : x
  2. Step 2: Convert to fraction form
    30,092.90/45,208.56 = 21,228.62/x
  3. Step 3: Cross multiply
    30,092.90x = 45,208.56 × 21,228.62
  4. Step 4: Simplify right side
    30,092.90x = 959,715,340.99
  5. Step 5: Solve for x
    x = 959,715,340.99/30,092.90
  6. Step 6: Final answer
    x = 31,891.75

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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.