Home / 12,789,438.80-19,184,158.20-11,395,979.60

Finding the Fourth Proportional to 12,789,438.80, 19,184,158.20 and 11,395,979.60

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Solution

The fourth proportional to 12,789,438.80, 19,184,158.20 and 11,395,979.60 is: 17,093,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789,438.80 : 19,184,158.20 = 11,395,979.60 : x
  2. Step 2: Convert to fraction form
    12,789,438.80/19,184,158.20 = 11,395,979.60/x
  3. Step 3: Cross multiply
    12,789,438.80x = 19,184,158.20 × 11,395,979.60
  4. Step 4: Simplify right side
    12,789,438.80x = 218,622,275,490,372.72
  5. Step 5: Solve for x
    x = 218,622,275,490,372.72/12,789,438.80
  6. Step 6: Final answer
    x = 17,093,969.40

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Similar ratio
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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.