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Finding the Fourth Proportional to 12,655.20, 17,464.68 and 7,351.68

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Solution

The fourth proportional to 12,655.20, 17,464.68 and 7,351.68 is: 10,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.20 : 17,464.68 = 7,351.68 : x
  2. Step 2: Convert to fraction form
    12,655.20/17,464.68 = 7,351.68/x
  3. Step 3: Cross multiply
    12,655.20x = 17,464.68 × 7,351.68
  4. Step 4: Simplify right side
    12,655.20x = 128,394,738.66
  5. Step 5: Solve for x
    x = 128,394,738.66/12,655.20
  6. Step 6: Final answer
    x = 10,145.61

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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.