Home / 12,891.42-19,334.06-9,422.30

Finding the Fourth Proportional to 12,891.42, 19,334.06 and 9,422.30

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Solution

The fourth proportional to 12,891.42, 19,334.06 and 9,422.30 is: 14,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.42 : 19,334.06 = 9,422.30 : x
  2. Step 2: Convert to fraction form
    12,891.42/19,334.06 = 9,422.30/x
  3. Step 3: Cross multiply
    12,891.42x = 19,334.06 × 9,422.30
  4. Step 4: Simplify right side
    12,891.42x = 182,171,313.54
  5. Step 5: Solve for x
    x = 182,171,313.54/12,891.42
  6. Step 6: Final answer
    x = 14,131.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.