Home / 19,121.40-28,693.26-8,027.28

Finding the Fourth Proportional to 19,121.40, 28,693.26 and 8,027.28

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Solution

The fourth proportional to 19,121.40, 28,693.26 and 8,027.28 is: 12,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.40 : 28,693.26 = 8,027.28 : x
  2. Step 2: Convert to fraction form
    19,121.40/28,693.26 = 8,027.28/x
  3. Step 3: Cross multiply
    19,121.40x = 28,693.26 × 8,027.28
  4. Step 4: Simplify right side
    19,121.40x = 230,328,832.13
  5. Step 5: Solve for x
    x = 230,328,832.13/19,121.40
  6. Step 6: Final answer
    x = 12,045.61

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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.