Home / 19,108.44-28,657.80-7,415.28

Finding the Fourth Proportional to 19,108.44, 28,657.80 and 7,415.28

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Solution

The fourth proportional to 19,108.44, 28,657.80 and 7,415.28 is: 11,121.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.44 : 28,657.80 = 7,415.28 : x
  2. Step 2: Convert to fraction form
    19,108.44/28,657.80 = 7,415.28/x
  3. Step 3: Cross multiply
    19,108.44x = 28,657.80 × 7,415.28
  4. Step 4: Simplify right side
    19,108.44x = 212,505,611.18
  5. Step 5: Solve for x
    x = 212,505,611.18/19,108.44
  6. Step 6: Final answer
    x = 11,121.03

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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.