Home / 18,831,331.80-28,239,999.30-7,469,429.40

Finding the Fourth Proportional to 18,831,331.80, 28,239,999.30 and 7,469,429.40

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Solution

The fourth proportional to 18,831,331.80, 28,239,999.30 and 7,469,429.40 is: 11,201,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831,331.80 : 28,239,999.30 = 7,469,429.40 : x
  2. Step 2: Convert to fraction form
    18,831,331.80/28,239,999.30 = 7,469,429.40/x
  3. Step 3: Cross multiply
    18,831,331.80x = 28,239,999.30 × 7,469,429.40
  4. Step 4: Simplify right side
    18,831,331.80x = 210,936,681,027,399.44
  5. Step 5: Solve for x
    x = 210,936,681,027,399.44/18,831,331.80
  6. Step 6: Final answer
    x = 11,201,368.19

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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.