Home / 12,901,678,945.67-17,805,211,782.51-7,821,257,010.16

Finding the Fourth Proportional to 12,901,678,945.67, 17,805,211,782.51 and 7,821,257,010.16

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Solution

The fourth proportional to 12,901,678,945.67, 17,805,211,782.51 and 7,821,257,010.16 is: 10,793,877,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901,678,945.67 : 17,805,211,782.51 = 7,821,257,010.16 : x
  2. Step 2: Convert to fraction form
    12,901,678,945.67/17,805,211,782.51 = 7,821,257,010.16/x
  3. Step 3: Cross multiply
    12,901,678,945.67x = 17,805,211,782.51 × 7,821,257,010.16
  4. Step 4: Simplify right side
    12,901,678,945.67x = 139,259,137,471,339,757,568
  5. Step 5: Solve for x
    x = 139,259,137,471,339,757,568/12,901,678,945.67
  6. Step 6: Final answer
    x = 10,793,877,142.48

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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.