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Finding the Fourth Proportional to 13,401.45, 18,496.45 and 7,735.42

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Solution

The fourth proportional to 13,401.45, 18,496.45 and 7,735.42 is: 10,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.45 : 18,496.45 = 7,735.42 : x
  2. Step 2: Convert to fraction form
    13,401.45/18,496.45 = 7,735.42/x
  3. Step 3: Cross multiply
    13,401.45x = 18,496.45 × 7,735.42
  4. Step 4: Simplify right side
    13,401.45x = 143,077,894.07
  5. Step 5: Solve for x
    x = 143,077,894.07/13,401.45
  6. Step 6: Final answer
    x = 10,676.30

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1.5x scale

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.