Home / 21,556,131,990.48-29,736,319,742.01-13,640,126,976.72

Finding the Fourth Proportional to 21,556,131,990.48, 29,736,319,742.01 and 13,640,126,976.72

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Solution

The fourth proportional to 21,556,131,990.48, 29,736,319,742.01 and 13,640,126,976.72 is: 18,816,324,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556,131,990.48 : 29,736,319,742.01 = 13,640,126,976.72 : x
  2. Step 2: Convert to fraction form
    21,556,131,990.48/29,736,319,742.01 = 13,640,126,976.72/x
  3. Step 3: Cross multiply
    21,556,131,990.48x = 29,736,319,742.01 × 13,640,126,976.72
  4. Step 4: Simplify right side
    21,556,131,990.48x = 405,607,177,101,362,069,504
  5. Step 5: Solve for x
    x = 405,607,177,101,362,069,504/21,556,131,990.48
  6. Step 6: Final answer
    x = 18,816,324,620.79

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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.