Home / 12,457,843.60-18,686,765.40-7,649,942.80

Finding the Fourth Proportional to 12,457,843.60, 18,686,765.40 and 7,649,942.80

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Solution

The fourth proportional to 12,457,843.60, 18,686,765.40 and 7,649,942.80 is: 11,474,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,843.60 : 18,686,765.40 = 7,649,942.80 : x
  2. Step 2: Convert to fraction form
    12,457,843.60/18,686,765.40 = 7,649,942.80/x
  3. Step 3: Cross multiply
    12,457,843.60x = 18,686,765.40 × 7,649,942.80
  4. Step 4: Simplify right side
    12,457,843.60x = 142,952,686,427,019.09
  5. Step 5: Solve for x
    x = 142,952,686,427,019.09/12,457,843.60
  6. Step 6: Final answer
    x = 11,474,914.20

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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.