Home / 20,780,764.92-28,678,728.78-11,614,139.64

Finding the Fourth Proportional to 20,780,764.92, 28,678,728.78 and 11,614,139.64

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Solution

The fourth proportional to 20,780,764.92, 28,678,728.78 and 11,614,139.64 is: 16,028,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,764.92 : 28,678,728.78 = 11,614,139.64 : x
  2. Step 2: Convert to fraction form
    20,780,764.92/28,678,728.78 = 11,614,139.64/x
  3. Step 3: Cross multiply
    20,780,764.92x = 28,678,728.78 × 11,614,139.64
  4. Step 4: Simplify right side
    20,780,764.92x = 333,078,760,748,606.88
  5. Step 5: Solve for x
    x = 333,078,760,748,606.88/20,780,764.92
  6. Step 6: Final answer
    x = 16,028,224.28

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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.