Home / 12,239,289.20-18,361,698.60-7,187,999.60

Finding the Fourth Proportional to 12,239,289.20, 18,361,698.60 and 7,187,999.60

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Solution

The fourth proportional to 12,239,289.20, 18,361,698.60 and 7,187,999.60 is: 10,783,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239,289.20 : 18,361,698.60 = 7,187,999.60 : x
  2. Step 2: Convert to fraction form
    12,239,289.20/18,361,698.60 = 7,187,999.60/x
  3. Step 3: Cross multiply
    12,239,289.20x = 18,361,698.60 × 7,187,999.60
  4. Step 4: Simplify right side
    12,239,289.20x = 131,983,882,192,120.56
  5. Step 5: Solve for x
    x = 131,983,882,192,120.56/12,239,289.20
  6. Step 6: Final answer
    x = 10,783,623.14

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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.