Home / 21,022,222,533.08-29,010,848,009.82-11,990,438,123.72

Finding the Fourth Proportional to 21,022,222,533.08, 29,010,848,009.82 and 11,990,438,123.72

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Solution

The fourth proportional to 21,022,222,533.08, 29,010,848,009.82 and 11,990,438,123.72 is: 16,546,907,798.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,222,533.08 : 29,010,848,009.82 = 11,990,438,123.72 : x
  2. Step 2: Convert to fraction form
    21,022,222,533.08/29,010,848,009.82 = 11,990,438,123.72/x
  3. Step 3: Cross multiply
    21,022,222,533.08x = 29,010,848,009.82 × 11,990,438,123.72
  4. Step 4: Simplify right side
    21,022,222,533.08x = 347,852,777,978,392,215,552
  5. Step 5: Solve for x
    x = 347,852,777,978,392,215,552/21,022,222,533.08
  6. Step 6: Final answer
    x = 16,546,907,798.69

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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.