Home / 21,904,505,021.04-30,218,616,162.72-12,868,185,229.44

Finding the Fourth Proportional to 21,904,505,021.04, 30,218,616,162.72 and 12,868,185,229.44

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Solution

The fourth proportional to 21,904,505,021.04, 30,218,616,162.72 and 12,868,185,229.44 is: 17,752,455,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904,505,021.04 : 30,218,616,162.72 = 12,868,185,229.44 : x
  2. Step 2: Convert to fraction form
    21,904,505,021.04/30,218,616,162.72 = 12,868,185,229.44/x
  3. Step 3: Cross multiply
    21,904,505,021.04x = 30,218,616,162.72 × 12,868,185,229.44
  4. Step 4: Simplify right side
    21,904,505,021.04x = 388,858,750,159,230,402,560
  5. Step 5: Solve for x
    x = 388,858,750,159,230,402,560/21,904,505,021.04
  6. Step 6: Final answer
    x = 17,752,455,478.26

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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.