Home / 12,836.20-19,232.70-10,978.60

Finding the Fourth Proportional to 12,836.20, 19,232.70 and 10,978.60

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Solution

The fourth proportional to 12,836.20, 19,232.70 and 10,978.60 is: 16,449.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.20 : 19,232.70 = 10,978.60 : x
  2. Step 2: Convert to fraction form
    12,836.20/19,232.70 = 10,978.60/x
  3. Step 3: Cross multiply
    12,836.20x = 19,232.70 × 10,978.60
  4. Step 4: Simplify right side
    12,836.20x = 211,148,120.22
  5. Step 5: Solve for x
    x = 211,148,120.22/12,836.20
  6. Step 6: Final answer
    x = 16,449.43

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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.