Home / 13,663.22-18,855.99-8,356.50

Finding the Fourth Proportional to 13,663.22, 18,855.99 and 8,356.50

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Solution

The fourth proportional to 13,663.22, 18,855.99 and 8,356.50 is: 11,532.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.22 : 18,855.99 = 8,356.50 : x
  2. Step 2: Convert to fraction form
    13,663.22/18,855.99 = 8,356.50/x
  3. Step 3: Cross multiply
    13,663.22x = 18,855.99 × 8,356.50
  4. Step 4: Simplify right side
    13,663.22x = 157,570,080.44
  5. Step 5: Solve for x
    x = 157,570,080.44/13,663.22
  6. Step 6: Final answer
    x = 11,532.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.