Home / 20,780,845.92-28,678,840.56-11,614,220.64

Finding the Fourth Proportional to 20,780,845.92, 28,678,840.56 and 11,614,220.64

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Solution

The fourth proportional to 20,780,845.92, 28,678,840.56 and 11,614,220.64 is: 16,028,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,845.92 : 28,678,840.56 = 11,614,220.64 : x
  2. Step 2: Convert to fraction form
    20,780,845.92/28,678,840.56 = 11,614,220.64/x
  3. Step 3: Cross multiply
    20,780,845.92x = 28,678,840.56 × 11,614,220.64
  4. Step 4: Simplify right side
    20,780,845.92x = 333,082,381,963,221.19
  5. Step 5: Solve for x
    x = 333,082,381,963,221.19/20,780,845.92
  6. Step 6: Final answer
    x = 16,028,336.06

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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.