Home / 13,386.43-18,473.01-8,081.47

Finding the Fourth Proportional to 13,386.43, 18,473.01 and 8,081.47

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Solution

The fourth proportional to 13,386.43, 18,473.01 and 8,081.47 is: 11,152.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.43 : 18,473.01 = 8,081.47 : x
  2. Step 2: Convert to fraction form
    13,386.43/18,473.01 = 8,081.47/x
  3. Step 3: Cross multiply
    13,386.43x = 18,473.01 × 8,081.47
  4. Step 4: Simplify right side
    13,386.43x = 149,289,076.12
  5. Step 5: Solve for x
    x = 149,289,076.12/13,386.43
  6. Step 6: Final answer
    x = 11,152.27

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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.