Home / 14,990,719.89-20,687,200.36-8,115,201.95

Finding the Fourth Proportional to 14,990,719.89, 20,687,200.36 and 8,115,201.95

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Solution

The fourth proportional to 14,990,719.89, 20,687,200.36 and 8,115,201.95 is: 11,198,982.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990,719.89 : 20,687,200.36 = 8,115,201.95 : x
  2. Step 2: Convert to fraction form
    14,990,719.89/20,687,200.36 = 8,115,201.95/x
  3. Step 3: Cross multiply
    14,990,719.89x = 20,687,200.36 × 8,115,201.95
  4. Step 4: Simplify right side
    14,990,719.89x = 167,880,808,598,076.69
  5. Step 5: Solve for x
    x = 167,880,808,598,076.69/14,990,719.89
  6. Step 6: Final answer
    x = 11,198,982.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.