Home / 18,513.82-27,782.00-6,666.60

Finding the Fourth Proportional to 18,513.82, 27,782.00 and 6,666.60

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Solution

The fourth proportional to 18,513.82, 27,782.00 and 6,666.60 is: 10,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.82 : 27,782.00 = 6,666.60 : x
  2. Step 2: Convert to fraction form
    18,513.82/27,782.00 = 6,666.60/x
  3. Step 3: Cross multiply
    18,513.82x = 27,782.00 × 6,666.60
  4. Step 4: Simplify right side
    18,513.82x = 185,211,428.41
  5. Step 5: Solve for x
    x = 185,211,428.41/18,513.82
  6. Step 6: Final answer
    x = 10,003.96

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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.