Home / 28,057,138,696.48-38,718,542,946.66-15,196,458,728.31

Finding the Fourth Proportional to 28,057,138,696.48, 38,718,542,946.66 and 15,196,458,728.31

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Solution

The fourth proportional to 28,057,138,696.48, 38,718,542,946.66 and 15,196,458,728.31 is: 20,970,945,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057,138,696.48 : 38,718,542,946.66 = 15,196,458,728.31 : x
  2. Step 2: Convert to fraction form
    28,057,138,696.48/38,718,542,946.66 = 15,196,458,728.31/x
  3. Step 3: Cross multiply
    28,057,138,696.48x = 38,718,542,946.66 × 15,196,458,728.31
  4. Step 4: Simplify right side
    28,057,138,696.48x = 588,384,739,909,063,540,736
  5. Step 5: Solve for x
    x = 588,384,739,909,063,540,736/28,057,138,696.48
  6. Step 6: Final answer
    x = 20,970,945,978.28

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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.