Home / 28,778,446,459.31-39,711,590,945.23-15,917,809,623.05

Finding the Fourth Proportional to 28,778,446,459.31, 39,711,590,945.23 and 15,917,809,623.05

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Solution

The fourth proportional to 28,778,446,459.31, 39,711,590,945.23 and 15,917,809,623.05 is: 21,965,103,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,446,459.31 : 39,711,590,945.23 = 15,917,809,623.05 : x
  2. Step 2: Convert to fraction form
    28,778,446,459.31/39,711,590,945.23 = 15,917,809,623.05/x
  3. Step 3: Cross multiply
    28,778,446,459.31x = 39,711,590,945.23 × 15,917,809,623.05
  4. Step 4: Simplify right side
    28,778,446,459.31x = 632,121,544,494,686,797,824
  5. Step 5: Solve for x
    x = 632,121,544,494,686,797,824/28,778,446,459.31
  6. Step 6: Final answer
    x = 21,965,103,133.30

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Double scale
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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.