Home / 12,284.80-18,429.90-3,963.40

Finding the Fourth Proportional to 12,284.80, 18,429.90 and 3,963.40

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Solution

The fourth proportional to 12,284.80, 18,429.90 and 3,963.40 is: 5,945.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,284.80 : 18,429.90 = 3,963.40 : x
  2. Step 2: Convert to fraction form
    12,284.80/18,429.90 = 3,963.40/x
  3. Step 3: Cross multiply
    12,284.80x = 18,429.90 × 3,963.40
  4. Step 4: Simplify right side
    12,284.80x = 73,045,065.66
  5. Step 5: Solve for x
    x = 73,045,065.66/12,284.80
  6. Step 6: Final answer
    x = 5,945.97

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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.