Home / 20,945,271.36-28,904,285.52-11,777,979.72

Finding the Fourth Proportional to 20,945,271.36, 28,904,285.52 and 11,777,979.72

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Solution

The fourth proportional to 20,945,271.36, 28,904,285.52 and 11,777,979.72 is: 16,253,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945,271.36 : 28,904,285.52 = 11,777,979.72 : x
  2. Step 2: Convert to fraction form
    20,945,271.36/28,904,285.52 = 11,777,979.72/x
  3. Step 3: Cross multiply
    20,945,271.36x = 28,904,285.52 × 11,777,979.72
  4. Step 4: Simplify right side
    20,945,271.36x = 340,434,088,675,649.69
  5. Step 5: Solve for x
    x = 340,434,088,675,649.69/20,945,271.36
  6. Step 6: Final answer
    x = 16,253,505.76

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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.