Home / 20,780,728.92-28,678,679.10-11,614,103.64

Finding the Fourth Proportional to 20,780,728.92, 28,678,679.10 and 11,614,103.64

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Solution

The fourth proportional to 20,780,728.92, 28,678,679.10 and 11,614,103.64 is: 16,028,174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,728.92 : 28,678,679.10 = 11,614,103.64 : x
  2. Step 2: Convert to fraction form
    20,780,728.92/28,678,679.10 = 11,614,103.64/x
  3. Step 3: Cross multiply
    20,780,728.92x = 28,678,679.10 × 11,614,103.64
  4. Step 4: Simplify right side
    20,780,728.92x = 333,077,151,325,701.94
  5. Step 5: Solve for x
    x = 333,077,151,325,701.94/20,780,728.92
  6. Step 6: Final answer
    x = 16,028,174.59

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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.