Home / 20,769,607.42-31,155,739.72-7,990,112.12

Finding the Fourth Proportional to 20,769,607.42, 31,155,739.72 and 7,990,112.12

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Solution

The fourth proportional to 20,769,607.42, 31,155,739.72 and 7,990,112.12 is: 11,985,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769,607.42 : 31,155,739.72 = 7,990,112.12 : x
  2. Step 2: Convert to fraction form
    20,769,607.42/31,155,739.72 = 7,990,112.12/x
  3. Step 3: Cross multiply
    20,769,607.42x = 31,155,739.72 × 7,990,112.12
  4. Step 4: Simplify right side
    20,769,607.42x = 248,937,853,544,337.41
  5. Step 5: Solve for x
    x = 248,937,853,544,337.41/20,769,607.42
  6. Step 6: Final answer
    x = 11,985,679.29

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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.