Home / 15,815,206,644.66-21,825,318,508.38-8,678,558,020.32

Finding the Fourth Proportional to 15,815,206,644.66, 21,825,318,508.38 and 8,678,558,020.32

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Solution

The fourth proportional to 15,815,206,644.66, 21,825,318,508.38 and 8,678,558,020.32 is: 11,976,592,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815,206,644.66 : 21,825,318,508.38 = 8,678,558,020.32 : x
  2. Step 2: Convert to fraction form
    15,815,206,644.66/21,825,318,508.38 = 8,678,558,020.32/x
  3. Step 3: Cross multiply
    15,815,206,644.66x = 21,825,318,508.38 × 8,678,558,020.32
  4. Step 4: Simplify right side
    15,815,206,644.66x = 189,412,292,986,939,801,600
  5. Step 5: Solve for x
    x = 189,412,292,986,939,801,600/15,815,206,644.66
  6. Step 6: Final answer
    x = 11,976,592,986.91

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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.