Home / 11,880.20-17,820.30-11,246.60

Finding the Fourth Proportional to 11,880.20, 17,820.30 and 11,246.60

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Solution

The fourth proportional to 11,880.20, 17,820.30 and 11,246.60 is: 16,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880.20 : 17,820.30 = 11,246.60 : x
  2. Step 2: Convert to fraction form
    11,880.20/17,820.30 = 11,246.60/x
  3. Step 3: Cross multiply
    11,880.20x = 17,820.30 × 11,246.60
  4. Step 4: Simplify right side
    11,880.20x = 200,417,785.98
  5. Step 5: Solve for x
    x = 200,417,785.98/11,880.20
  6. Step 6: Final answer
    x = 16,869.90

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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.