Home / 20,670,338.78-28,527,783.76-11,853,240.51

Finding the Fourth Proportional to 20,670,338.78, 28,527,783.76 and 11,853,240.51

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Solution

The fourth proportional to 20,670,338.78, 28,527,783.76 and 11,853,240.51 is: 16,359,029.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670,338.78 : 28,527,783.76 = 11,853,240.51 : x
  2. Step 2: Convert to fraction form
    20,670,338.78/28,527,783.76 = 11,853,240.51/x
  3. Step 3: Cross multiply
    20,670,338.78x = 28,527,783.76 × 11,853,240.51
  4. Step 4: Simplify right side
    20,670,338.78x = 338,146,682,246,347.88
  5. Step 5: Solve for x
    x = 338,146,682,246,347.88/20,670,338.78
  6. Step 6: Final answer
    x = 16,359,029.52

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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.