Home / 13,729,800.69-18,945,872.46-8,147,085.21

Finding the Fourth Proportional to 13,729,800.69, 18,945,872.46 and 8,147,085.21

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Solution

The fourth proportional to 13,729,800.69, 18,945,872.46 and 8,147,085.21 is: 11,242,234.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729,800.69 : 18,945,872.46 = 8,147,085.21 : x
  2. Step 2: Convert to fraction form
    13,729,800.69/18,945,872.46 = 8,147,085.21/x
  3. Step 3: Cross multiply
    13,729,800.69x = 18,945,872.46 × 8,147,085.21
  4. Step 4: Simplify right side
    13,729,800.69x = 154,353,637,309,412.31
  5. Step 5: Solve for x
    x = 154,353,637,309,412.31/13,729,800.69
  6. Step 6: Final answer
    x = 11,242,234.38

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1.5x scale

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.