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Finding the Fourth Proportional to 12,651.21, 17,463.33 and 7,615.67

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Solution

The fourth proportional to 12,651.21, 17,463.33 and 7,615.67 is: 10,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.21 : 17,463.33 = 7,615.67 : x
  2. Step 2: Convert to fraction form
    12,651.21/17,463.33 = 7,615.67/x
  3. Step 3: Cross multiply
    12,651.21x = 17,463.33 × 7,615.67
  4. Step 4: Simplify right side
    12,651.21x = 132,994,871.06
  5. Step 5: Solve for x
    x = 132,994,871.06/12,651.21
  6. Step 6: Final answer
    x = 10,512.42

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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.