Home / 19,112.72-28,672.68-8,582.49

Finding the Fourth Proportional to 19,112.72, 28,672.68 and 8,582.49

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Solution

The fourth proportional to 19,112.72, 28,672.68 and 8,582.49 is: 12,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.72 : 28,672.68 = 8,582.49 : x
  2. Step 2: Convert to fraction form
    19,112.72/28,672.68 = 8,582.49/x
  3. Step 3: Cross multiply
    19,112.72x = 28,672.68 × 8,582.49
  4. Step 4: Simplify right side
    19,112.72x = 246,083,021.56
  5. Step 5: Solve for x
    x = 246,083,021.56/19,112.72
  6. Step 6: Final answer
    x = 12,875.36

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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.