Home / 18,798.22-28,186.40-7,112.34

Finding the Fourth Proportional to 18,798.22, 28,186.40 and 7,112.34

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Solution

The fourth proportional to 18,798.22, 28,186.40 and 7,112.34 is: 10,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.22 : 28,186.40 = 7,112.34 : x
  2. Step 2: Convert to fraction form
    18,798.22/28,186.40 = 7,112.34/x
  3. Step 3: Cross multiply
    18,798.22x = 28,186.40 × 7,112.34
  4. Step 4: Simplify right side
    18,798.22x = 200,471,260.18
  5. Step 5: Solve for x
    x = 200,471,260.18/18,798.22
  6. Step 6: Final answer
    x = 10,664.37

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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.