Home / 12,728.67-19,092.60-3,368.40

Finding the Fourth Proportional to 12,728.67, 19,092.60 and 3,368.40

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Solution

The fourth proportional to 12,728.67, 19,092.60 and 3,368.40 is: 5,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.67 : 19,092.60 = 3,368.40 : x
  2. Step 2: Convert to fraction form
    12,728.67/19,092.60 = 3,368.40/x
  3. Step 3: Cross multiply
    12,728.67x = 19,092.60 × 3,368.40
  4. Step 4: Simplify right side
    12,728.67x = 64,311,513.84
  5. Step 5: Solve for x
    x = 64,311,513.84/12,728.67
  6. Step 6: Final answer
    x = 5,052.49

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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.