Home / 10,912,921.20-16,404,811.20-7,740,021.60

Finding the Fourth Proportional to 10,912,921.20, 16,404,811.20 and 7,740,021.60

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Solution

The fourth proportional to 10,912,921.20, 16,404,811.20 and 7,740,021.60 is: 11,635,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912,921.20 : 16,404,811.20 = 7,740,021.60 : x
  2. Step 2: Convert to fraction form
    10,912,921.20/16,404,811.20 = 7,740,021.60/x
  3. Step 3: Cross multiply
    10,912,921.20x = 16,404,811.20 × 7,740,021.60
  4. Step 4: Simplify right side
    10,912,921.20x = 126,973,593,031,921.91
  5. Step 5: Solve for x
    x = 126,973,593,031,921.91/10,912,921.20
  6. Step 6: Final answer
    x = 11,635,160.81

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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.