Home / 20,705,771.21-28,575,242.66-11,413,320.32

Finding the Fourth Proportional to 20,705,771.21, 28,575,242.66 and 11,413,320.32

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Solution

The fourth proportional to 20,705,771.21, 28,575,242.66 and 11,413,320.32 is: 15,751,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,771.21 : 28,575,242.66 = 11,413,320.32 : x
  2. Step 2: Convert to fraction form
    20,705,771.21/28,575,242.66 = 11,413,320.32/x
  3. Step 3: Cross multiply
    20,705,771.21x = 28,575,242.66 × 11,413,320.32
  4. Step 4: Simplify right side
    20,705,771.21x = 326,138,397,585,965.94
  5. Step 5: Solve for x
    x = 326,138,397,585,965.94/20,705,771.21
  6. Step 6: Final answer
    x = 15,751,086.71

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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.