Home / 18,840.12-28,236.96-7,739.88

Finding the Fourth Proportional to 18,840.12, 28,236.96 and 7,739.88

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Solution

The fourth proportional to 18,840.12, 28,236.96 and 7,739.88 is: 11,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.12 : 28,236.96 = 7,739.88 : x
  2. Step 2: Convert to fraction form
    18,840.12/28,236.96 = 7,739.88/x
  3. Step 3: Cross multiply
    18,840.12x = 28,236.96 × 7,739.88
  4. Step 4: Simplify right side
    18,840.12x = 218,550,681.96
  5. Step 5: Solve for x
    x = 218,550,681.96/18,840.12
  6. Step 6: Final answer
    x = 11,600.28

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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.