Home / 20,736,021.30-31,089,286.35-7,951,586.10

Finding the Fourth Proportional to 20,736,021.30, 31,089,286.35 and 7,951,586.10

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Solution

The fourth proportional to 20,736,021.30, 31,089,286.35 and 7,951,586.10 is: 11,921,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,021.30 : 31,089,286.35 = 7,951,586.10 : x
  2. Step 2: Convert to fraction form
    20,736,021.30/31,089,286.35 = 7,951,586.10/x
  3. Step 3: Cross multiply
    20,736,021.30x = 31,089,286.35 × 7,951,586.10
  4. Step 4: Simplify right side
    20,736,021.30x = 247,209,137,199,579.75
  5. Step 5: Solve for x
    x = 247,209,137,199,579.75/20,736,021.30
  6. Step 6: Final answer
    x = 11,921,724.69

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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.