Home / 20,740,514.51-28,617,636.97-11,918,261.75

Finding the Fourth Proportional to 20,740,514.51, 28,617,636.97 and 11,918,261.75

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Solution

The fourth proportional to 20,740,514.51, 28,617,636.97 and 11,918,261.75 is: 16,444,745.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,514.51 : 28,617,636.97 = 11,918,261.75 : x
  2. Step 2: Convert to fraction form
    20,740,514.51/28,617,636.97 = 11,918,261.75/x
  3. Step 3: Cross multiply
    20,740,514.51x = 28,617,636.97 × 11,918,261.75
  4. Step 4: Simplify right side
    20,740,514.51x = 341,072,488,161,378.81
  5. Step 5: Solve for x
    x = 341,072,488,161,378.81/20,740,514.51
  6. Step 6: Final answer
    x = 16,444,745.76

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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.