Home / 12,675.20-18,996.60-11,217.20

Finding the Fourth Proportional to 12,675.20, 18,996.60 and 11,217.20

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Solution

The fourth proportional to 12,675.20, 18,996.60 and 11,217.20 is: 16,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.20 : 18,996.60 = 11,217.20 : x
  2. Step 2: Convert to fraction form
    12,675.20/18,996.60 = 11,217.20/x
  3. Step 3: Cross multiply
    12,675.20x = 18,996.60 × 11,217.20
  4. Step 4: Simplify right side
    12,675.20x = 213,088,661.52
  5. Step 5: Solve for x
    x = 213,088,661.52/12,675.20
  6. Step 6: Final answer
    x = 16,811.46

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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.