Home / 12,228.40-18,340.80-3,464.20

Finding the Fourth Proportional to 12,228.40, 18,340.80 and 3,464.20

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Solution

The fourth proportional to 12,228.40, 18,340.80 and 3,464.20 is: 5,195.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.40 : 18,340.80 = 3,464.20 : x
  2. Step 2: Convert to fraction form
    12,228.40/18,340.80 = 3,464.20/x
  3. Step 3: Cross multiply
    12,228.40x = 18,340.80 × 3,464.20
  4. Step 4: Simplify right side
    12,228.40x = 63,536,199.36
  5. Step 5: Solve for x
    x = 63,536,199.36/12,228.40
  6. Step 6: Final answer
    x = 5,195.79

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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.