Home / 18,741.36-28,112.03-4,890.36

Finding the Fourth Proportional to 18,741.36, 28,112.03 and 4,890.36

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Solution

The fourth proportional to 18,741.36, 28,112.03 and 4,890.36 is: 7,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.36 : 28,112.03 = 4,890.36 : x
  2. Step 2: Convert to fraction form
    18,741.36/28,112.03 = 4,890.36/x
  3. Step 3: Cross multiply
    18,741.36x = 28,112.03 × 4,890.36
  4. Step 4: Simplify right side
    18,741.36x = 137,477,782.02
  5. Step 5: Solve for x
    x = 137,477,782.02/18,741.36
  6. Step 6: Final answer
    x = 7,335.53

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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.