Home / 21,815,214,904.09-30,104,982,969.81-11,790,709,751.21

Finding the Fourth Proportional to 21,815,214,904.09, 30,104,982,969.81 and 11,790,709,751.21

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Solution

The fourth proportional to 21,815,214,904.09, 30,104,982,969.81 and 11,790,709,751.21 is: 16,271,172,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815,214,904.09 : 30,104,982,969.81 = 11,790,709,751.21 : x
  2. Step 2: Convert to fraction form
    21,815,214,904.09/30,104,982,969.81 = 11,790,709,751.21/x
  3. Step 3: Cross multiply
    21,815,214,904.09x = 30,104,982,969.81 × 11,790,709,751.21
  4. Step 4: Simplify right side
    21,815,214,904.09x = 354,959,116,262,174,556,160
  5. Step 5: Solve for x
    x = 354,959,116,262,174,556,160/21,815,214,904.09
  6. Step 6: Final answer
    x = 16,271,172,107.30

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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.