Home / 12,736.21-19,079.46-8,340.34

Finding the Fourth Proportional to 12,736.21, 19,079.46 and 8,340.34

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Solution

The fourth proportional to 12,736.21, 19,079.46 and 8,340.34 is: 12,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,736.21 : 19,079.46 = 8,340.34 : x
  2. Step 2: Convert to fraction form
    12,736.21/19,079.46 = 8,340.34/x
  3. Step 3: Cross multiply
    12,736.21x = 19,079.46 × 8,340.34
  4. Step 4: Simplify right side
    12,736.21x = 159,129,046.32
  5. Step 5: Solve for x
    x = 159,129,046.32/12,736.21
  6. Step 6: Final answer
    x = 12,494.23

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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.