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Finding the Fourth Proportional to 13,364.67, 18,443.79 and 7,396.32

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Solution

The fourth proportional to 13,364.67, 18,443.79 and 7,396.32 is: 10,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.67 : 18,443.79 = 7,396.32 : x
  2. Step 2: Convert to fraction form
    13,364.67/18,443.79 = 7,396.32/x
  3. Step 3: Cross multiply
    13,364.67x = 18,443.79 × 7,396.32
  4. Step 4: Simplify right side
    13,364.67x = 136,416,172.85
  5. Step 5: Solve for x
    x = 136,416,172.85/13,364.67
  6. Step 6: Final answer
    x = 10,207.22

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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.