Home / 12,974.80-19,433.40-6,811.60

Finding the Fourth Proportional to 12,974.80, 19,433.40 and 6,811.60

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Solution

The fourth proportional to 12,974.80, 19,433.40 and 6,811.60 is: 10,202.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.80 : 19,433.40 = 6,811.60 : x
  2. Step 2: Convert to fraction form
    12,974.80/19,433.40 = 6,811.60/x
  3. Step 3: Cross multiply
    12,974.80x = 19,433.40 × 6,811.60
  4. Step 4: Simplify right side
    12,974.80x = 132,372,547.44
  5. Step 5: Solve for x
    x = 132,372,547.44/12,974.80
  6. Step 6: Final answer
    x = 10,202.28

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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.