Home / 20,661,701.58-28,505,446.83-12,923,803.98

Finding the Fourth Proportional to 20,661,701.58, 28,505,446.83 and 12,923,803.98

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Solution

The fourth proportional to 20,661,701.58, 28,505,446.83 and 12,923,803.98 is: 17,830,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661,701.58 : 28,505,446.83 = 12,923,803.98 : x
  2. Step 2: Convert to fraction form
    20,661,701.58/28,505,446.83 = 12,923,803.98/x
  3. Step 3: Cross multiply
    20,661,701.58x = 28,505,446.83 × 12,923,803.98
  4. Step 4: Simplify right side
    20,661,701.58x = 368,398,807,193,232.38
  5. Step 5: Solve for x
    x = 368,398,807,193,232.38/20,661,701.58
  6. Step 6: Final answer
    x = 17,830,032.33

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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.