Home / 28,373,821.83-42,405,268.67-20,713,597.36

Finding the Fourth Proportional to 28,373,821.83, 42,405,268.67 and 20,713,597.36

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Solution

The fourth proportional to 28,373,821.83, 42,405,268.67 and 20,713,597.36 is: 30,956,903.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,373,821.83 : 42,405,268.67 = 20,713,597.36 : x
  2. Step 2: Convert to fraction form
    28,373,821.83/42,405,268.67 = 20,713,597.36/x
  3. Step 3: Cross multiply
    28,373,821.83x = 42,405,268.67 × 20,713,597.36
  4. Step 4: Simplify right side
    28,373,821.83x = 878,365,661,041,097.62
  5. Step 5: Solve for x
    x = 878,365,661,041,097.62/28,373,821.83
  6. Step 6: Final answer
    x = 30,956,903.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.