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Finding the Fourth Proportional to 13,395.48, 18,486 and 8,090.52

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Solution

The fourth proportional to 13,395.48, 18,486 and 8,090.52 is: 11,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.48 : 18,486 = 8,090.52 : x
  2. Step 2: Convert to fraction form
    13,395.48/18,486 = 8,090.52/x
  3. Step 3: Cross multiply
    13,395.48x = 18,486 × 8,090.52
  4. Step 4: Simplify right side
    13,395.48x = 149,561,352.72
  5. Step 5: Solve for x
    x = 149,561,352.72/13,395.48
  6. Step 6: Final answer
    x = 11,165.06

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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.