Home / 21,110,538.90-29,135,287.80-11,821,645.74

Finding the Fourth Proportional to 21,110,538.90, 29,135,287.80 and 11,821,645.74

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Solution

The fourth proportional to 21,110,538.90, 29,135,287.80 and 11,821,645.74 is: 16,315,407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110,538.90 : 29,135,287.80 = 11,821,645.74 : x
  2. Step 2: Convert to fraction form
    21,110,538.90/29,135,287.80 = 11,821,645.74/x
  3. Step 3: Cross multiply
    21,110,538.90x = 29,135,287.80 × 11,821,645.74
  4. Step 4: Simplify right side
    21,110,538.90x = 344,427,050,904,544
  5. Step 5: Solve for x
    x = 344,427,050,904,544/21,110,538.90
  6. Step 6: Final answer
    x = 16,315,407.79

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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.