Home / 19,112.44-28,663.80-7,419.28

Finding the Fourth Proportional to 19,112.44, 28,663.80 and 7,419.28

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Solution

The fourth proportional to 19,112.44, 28,663.80 and 7,419.28 is: 11,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.44 : 28,663.80 = 7,419.28 : x
  2. Step 2: Convert to fraction form
    19,112.44/28,663.80 = 7,419.28/x
  3. Step 3: Cross multiply
    19,112.44x = 28,663.80 × 7,419.28
  4. Step 4: Simplify right side
    19,112.44x = 212,664,758.06
  5. Step 5: Solve for x
    x = 212,664,758.06/19,112.44
  6. Step 6: Final answer
    x = 11,127.03

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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.