Home / 21,216,261,840.75-29,278,470,376.50-11,571,015,128.85

Finding the Fourth Proportional to 21,216,261,840.75, 29,278,470,376.50 and 11,571,015,128.85

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Solution

The fourth proportional to 21,216,261,840.75, 29,278,470,376.50 and 11,571,015,128.85 is: 15,968,016,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216,261,840.75 : 29,278,470,376.50 = 11,571,015,128.85 : x
  2. Step 2: Convert to fraction form
    21,216,261,840.75/29,278,470,376.50 = 11,571,015,128.85/x
  3. Step 3: Cross multiply
    21,216,261,840.75x = 29,278,470,376.50 × 11,571,015,128.85
  4. Step 4: Simplify right side
    21,216,261,840.75x = 338,781,623,676,172,894,208
  5. Step 5: Solve for x
    x = 338,781,623,676,172,894,208/21,216,261,840.75
  6. Step 6: Final answer
    x = 15,968,016,713.74

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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.