Home / 20,380,326.07-30,558,766.77-12,191,148.31

Finding the Fourth Proportional to 20,380,326.07, 30,558,766.77 and 12,191,148.31

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Solution

The fourth proportional to 20,380,326.07, 30,558,766.77 and 12,191,148.31 is: 18,279,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,326.07 : 30,558,766.77 = 12,191,148.31 : x
  2. Step 2: Convert to fraction form
    20,380,326.07/30,558,766.77 = 12,191,148.31/x
  3. Step 3: Cross multiply
    20,380,326.07x = 30,558,766.77 × 12,191,148.31
  4. Step 4: Simplify right side
    20,380,326.07x = 372,546,457,863,769.69
  5. Step 5: Solve for x
    x = 372,546,457,863,769.69/20,380,326.07
  6. Step 6: Final answer
    x = 18,279,710.37

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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.