Home / 20,539,923.86-30,760,983.52-11,885,780.84

Finding the Fourth Proportional to 20,539,923.86, 30,760,983.52 and 11,885,780.84

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Solution

The fourth proportional to 20,539,923.86, 30,760,983.52 and 11,885,780.84 is: 17,800,373.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,923.86 : 30,760,983.52 = 11,885,780.84 : x
  2. Step 2: Convert to fraction form
    20,539,923.86/30,760,983.52 = 11,885,780.84/x
  3. Step 3: Cross multiply
    20,539,923.86x = 30,760,983.52 × 11,885,780.84
  4. Step 4: Simplify right side
    20,539,923.86x = 365,618,308,541,571.75
  5. Step 5: Solve for x
    x = 365,618,308,541,571.75/20,539,923.86
  6. Step 6: Final answer
    x = 17,800,373.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.