Home / 20,981,979,379.02-31,464,010,001.15-12,144,918,003.06

Finding the Fourth Proportional to 20,981,979,379.02, 31,464,010,001.15 and 12,144,918,003.06

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Solution

The fourth proportional to 20,981,979,379.02, 31,464,010,001.15 and 12,144,918,003.06 is: 18,212,191,262.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981,979,379.02 : 31,464,010,001.15 = 12,144,918,003.06 : x
  2. Step 2: Convert to fraction form
    20,981,979,379.02/31,464,010,001.15 = 12,144,918,003.06/x
  3. Step 3: Cross multiply
    20,981,979,379.02x = 31,464,010,001.15 × 12,144,918,003.06
  4. Step 4: Simplify right side
    20,981,979,379.02x = 382,127,821,511,305,658,368
  5. Step 5: Solve for x
    x = 382,127,821,511,305,658,368/20,981,979,379.02
  6. Step 6: Final answer
    x = 18,212,191,262.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.