Home / 19,015.18-28,490.66-8,469.06

Finding the Fourth Proportional to 19,015.18, 28,490.66 and 8,469.06

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Solution

The fourth proportional to 19,015.18, 28,490.66 and 8,469.06 is: 12,689.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.18 : 28,490.66 = 8,469.06 : x
  2. Step 2: Convert to fraction form
    19,015.18/28,490.66 = 8,469.06/x
  3. Step 3: Cross multiply
    19,015.18x = 28,490.66 × 8,469.06
  4. Step 4: Simplify right side
    19,015.18x = 241,289,108.98
  5. Step 5: Solve for x
    x = 241,289,108.98/19,015.18
  6. Step 6: Final answer
    x = 12,689.29

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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.