Home / 12,621,854.40-18,945,223.20-6,239,313.60

Finding the Fourth Proportional to 12,621,854.40, 18,945,223.20 and 6,239,313.60

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Solution

The fourth proportional to 12,621,854.40, 18,945,223.20 and 6,239,313.60 is: 9,365,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621,854.40 : 18,945,223.20 = 6,239,313.60 : x
  2. Step 2: Convert to fraction form
    12,621,854.40/18,945,223.20 = 6,239,313.60/x
  3. Step 3: Cross multiply
    12,621,854.40x = 18,945,223.20 × 6,239,313.60
  4. Step 4: Simplify right side
    12,621,854.40x = 118,205,188,766,795.52
  5. Step 5: Solve for x
    x = 118,205,188,766,795.52/12,621,854.40
  6. Step 6: Final answer
    x = 9,365,120.61

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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.