Home / 18,705.03-28,066.65-7,619.37

Finding the Fourth Proportional to 18,705.03, 28,066.65 and 7,619.37

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Solution

The fourth proportional to 18,705.03, 28,066.65 and 7,619.37 is: 11,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.03 : 28,066.65 = 7,619.37 : x
  2. Step 2: Convert to fraction form
    18,705.03/28,066.65 = 7,619.37/x
  3. Step 3: Cross multiply
    18,705.03x = 28,066.65 × 7,619.37
  4. Step 4: Simplify right side
    18,705.03x = 213,850,191.01
  5. Step 5: Solve for x
    x = 213,850,191.01/18,705.03
  6. Step 6: Final answer
    x = 11,432.76

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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.