Home / 20,661,459.58-28,505,112.87-12,923,561.98

Finding the Fourth Proportional to 20,661,459.58, 28,505,112.87 and 12,923,561.98

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Solution

The fourth proportional to 20,661,459.58, 28,505,112.87 and 12,923,561.98 is: 17,829,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661,459.58 : 28,505,112.87 = 12,923,561.98 : x
  2. Step 2: Convert to fraction form
    20,661,459.58/28,505,112.87 = 12,923,561.98/x
  3. Step 3: Cross multiply
    20,661,459.58x = 28,505,112.87 × 12,923,561.98
  4. Step 4: Simplify right side
    20,661,459.58x = 368,387,592,922,340.69
  5. Step 5: Solve for x
    x = 368,387,592,922,340.69/20,661,459.58
  6. Step 6: Final answer
    x = 17,829,698.41

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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.