Home / 30,286.31-45,382.22-19,169.51

Finding the Fourth Proportional to 30,286.31, 45,382.22 and 19,169.51

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Solution

The fourth proportional to 30,286.31, 45,382.22 and 19,169.51 is: 28,724.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286.31 : 45,382.22 = 19,169.51 : x
  2. Step 2: Convert to fraction form
    30,286.31/45,382.22 = 19,169.51/x
  3. Step 3: Cross multiply
    30,286.31x = 45,382.22 × 19,169.51
  4. Step 4: Simplify right side
    30,286.31x = 869,955,032.34
  5. Step 5: Solve for x
    x = 869,955,032.34/30,286.31
  6. Step 6: Final answer
    x = 28,724.37

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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.