Home / 19,115.46-28,684.32-8,021.28

Finding the Fourth Proportional to 19,115.46, 28,684.32 and 8,021.28

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Solution

The fourth proportional to 19,115.46, 28,684.32 and 8,021.28 is: 12,036.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.46 : 28,684.32 = 8,021.28 : x
  2. Step 2: Convert to fraction form
    19,115.46/28,684.32 = 8,021.28/x
  3. Step 3: Cross multiply
    19,115.46x = 28,684.32 × 8,021.28
  4. Step 4: Simplify right side
    19,115.46x = 230,084,962.33
  5. Step 5: Solve for x
    x = 230,084,962.33/19,115.46
  6. Step 6: Final answer
    x = 12,036.59

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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.