Home / 12,682.80-18,995.40-6,519.60

Finding the Fourth Proportional to 12,682.80, 18,995.40 and 6,519.60

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Solution

The fourth proportional to 12,682.80, 18,995.40 and 6,519.60 is: 9,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.80 : 18,995.40 = 6,519.60 : x
  2. Step 2: Convert to fraction form
    12,682.80/18,995.40 = 6,519.60/x
  3. Step 3: Cross multiply
    12,682.80x = 18,995.40 × 6,519.60
  4. Step 4: Simplify right side
    12,682.80x = 123,842,409.84
  5. Step 5: Solve for x
    x = 123,842,409.84/12,682.80
  6. Step 6: Final answer
    x = 9,764.60

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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.