Home / 13,313.26-18,371.82-7,345

Finding the Fourth Proportional to 13,313.26, 18,371.82 and 7,345

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Solution

The fourth proportional to 13,313.26, 18,371.82 and 7,345 is: 10,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.26 : 18,371.82 = 7,345 : x
  2. Step 2: Convert to fraction form
    13,313.26/18,371.82 = 7,345/x
  3. Step 3: Cross multiply
    13,313.26x = 18,371.82 × 7,345
  4. Step 4: Simplify right side
    13,313.26x = 134,941,017.90
  5. Step 5: Solve for x
    x = 134,941,017.90/13,313.26
  6. Step 6: Final answer
    x = 10,135.84

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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.