Home / 28,678.25-43,009.86-12,874.44

Finding the Fourth Proportional to 28,678.25, 43,009.86 and 12,874.44

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Solution

The fourth proportional to 28,678.25, 43,009.86 and 12,874.44 is: 19,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.25 : 43,009.86 = 12,874.44 : x
  2. Step 2: Convert to fraction form
    28,678.25/43,009.86 = 12,874.44/x
  3. Step 3: Cross multiply
    28,678.25x = 43,009.86 × 12,874.44
  4. Step 4: Simplify right side
    28,678.25x = 553,728,035.34
  5. Step 5: Solve for x
    x = 553,728,035.34/28,678.25
  6. Step 6: Final answer
    x = 19,308.29

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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.