Home / 13,340.26-18,408.63-7,371.82

Finding the Fourth Proportional to 13,340.26, 18,408.63 and 7,371.82

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Solution

The fourth proportional to 13,340.26, 18,408.63 and 7,371.82 is: 10,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.26 : 18,408.63 = 7,371.82 : x
  2. Step 2: Convert to fraction form
    13,340.26/18,408.63 = 7,371.82/x
  3. Step 3: Cross multiply
    13,340.26x = 18,408.63 × 7,371.82
  4. Step 4: Simplify right side
    13,340.26x = 135,705,106.81
  5. Step 5: Solve for x
    x = 135,705,106.81/13,340.26
  6. Step 6: Final answer
    x = 10,172.60

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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.