Home / 18,770.58-28,147.56-5,620.50

Finding the Fourth Proportional to 18,770.58, 28,147.56 and 5,620.50

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Solution

The fourth proportional to 18,770.58, 28,147.56 and 5,620.50 is: 8,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.58 : 28,147.56 = 5,620.50 : x
  2. Step 2: Convert to fraction form
    18,770.58/28,147.56 = 5,620.50/x
  3. Step 3: Cross multiply
    18,770.58x = 28,147.56 × 5,620.50
  4. Step 4: Simplify right side
    18,770.58x = 158,203,360.98
  5. Step 5: Solve for x
    x = 158,203,360.98/18,770.58
  6. Step 6: Final answer
    x = 8,428.26

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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.