Home / 28,645.65-42,967.81-16,874.09

Finding the Fourth Proportional to 28,645.65, 42,967.81 and 16,874.09

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Solution

The fourth proportional to 28,645.65, 42,967.81 and 16,874.09 is: 25,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.65 : 42,967.81 = 16,874.09 : x
  2. Step 2: Convert to fraction form
    28,645.65/42,967.81 = 16,874.09/x
  3. Step 3: Cross multiply
    28,645.65x = 42,967.81 × 16,874.09
  4. Step 4: Simplify right side
    28,645.65x = 725,042,758.28
  5. Step 5: Solve for x
    x = 725,042,758.28/28,645.65
  6. Step 6: Final answer
    x = 25,310.75

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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.