Home / 20,687,271.89-28,548,435.09-11,990,489.02

Finding the Fourth Proportional to 20,687,271.89, 28,548,435.09 and 11,990,489.02

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Solution

The fourth proportional to 20,687,271.89, 28,548,435.09 and 11,990,489.02 is: 16,546,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,271.89 : 28,548,435.09 = 11,990,489.02 : x
  2. Step 2: Convert to fraction form
    20,687,271.89/28,548,435.09 = 11,990,489.02/x
  3. Step 3: Cross multiply
    20,687,271.89x = 28,548,435.09 × 11,990,489.02
  4. Step 4: Simplify right side
    20,687,271.89x = 342,309,697,444,502.81
  5. Step 5: Solve for x
    x = 342,309,697,444,502.81/20,687,271.89
  6. Step 6: Final answer
    x = 16,546,874.78

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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.