Home / 19,917.19-29,872.32-7,435.90

Finding the Fourth Proportional to 19,917.19, 29,872.32 and 7,435.90

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Solution

The fourth proportional to 19,917.19, 29,872.32 and 7,435.90 is: 11,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.19 : 29,872.32 = 7,435.90 : x
  2. Step 2: Convert to fraction form
    19,917.19/29,872.32 = 7,435.90/x
  3. Step 3: Cross multiply
    19,917.19x = 29,872.32 × 7,435.90
  4. Step 4: Simplify right side
    19,917.19x = 222,127,584.29
  5. Step 5: Solve for x
    x = 222,127,584.29/19,917.19
  6. Step 6: Final answer
    x = 11,152.56

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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.