Home / 15,511,132.69-21,404,672.63-8,890,975.13

Finding the Fourth Proportional to 15,511,132.69, 21,404,672.63 and 8,890,975.13

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Solution

The fourth proportional to 15,511,132.69, 21,404,672.63 and 8,890,975.13 is: 12,269,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511,132.69 : 21,404,672.63 = 8,890,975.13 : x
  2. Step 2: Convert to fraction form
    15,511,132.69/21,404,672.63 = 8,890,975.13/x
  3. Step 3: Cross multiply
    15,511,132.69x = 21,404,672.63 × 8,890,975.13
  4. Step 4: Simplify right side
    15,511,132.69x = 190,308,412,019,121.69
  5. Step 5: Solve for x
    x = 190,308,412,019,121.69/15,511,132.69
  6. Step 6: Final answer
    x = 12,269,149.90

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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.