Home / 20,131,818.53-27,780,919.34-11,428,848.86

Finding the Fourth Proportional to 20,131,818.53, 27,780,919.34 and 11,428,848.86

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Solution

The fourth proportional to 20,131,818.53, 27,780,919.34 and 11,428,848.86 is: 15,771,249.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,818.53 : 27,780,919.34 = 11,428,848.86 : x
  2. Step 2: Convert to fraction form
    20,131,818.53/27,780,919.34 = 11,428,848.86/x
  3. Step 3: Cross multiply
    20,131,818.53x = 27,780,919.34 × 11,428,848.86
  4. Step 4: Simplify right side
    20,131,818.53x = 317,503,928,132,662.12
  5. Step 5: Solve for x
    x = 317,503,928,132,662.12/20,131,818.53
  6. Step 6: Final answer
    x = 15,771,249.27

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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.