Home / 20,741,185.20-31,111,777.80-13,921,025.70

Finding the Fourth Proportional to 20,741,185.20, 31,111,777.80 and 13,921,025.70

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Solution

The fourth proportional to 20,741,185.20, 31,111,777.80 and 13,921,025.70 is: 20,881,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741,185.20 : 31,111,777.80 = 13,921,025.70 : x
  2. Step 2: Convert to fraction form
    20,741,185.20/31,111,777.80 = 13,921,025.70/x
  3. Step 3: Cross multiply
    20,741,185.20x = 31,111,777.80 × 13,921,025.70
  4. Step 4: Simplify right side
    20,741,185.20x = 433,107,858,326,489.44
  5. Step 5: Solve for x
    x = 433,107,858,326,489.44/20,741,185.20
  6. Step 6: Final answer
    x = 20,881,538.55

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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.