Home / 20,909,930.27-28,856,349.38-11,742,769.85

Finding the Fourth Proportional to 20,909,930.27, 28,856,349.38 and 11,742,769.85

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Solution

The fourth proportional to 20,909,930.27, 28,856,349.38 and 11,742,769.85 is: 16,205,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909,930.27 : 28,856,349.38 = 11,742,769.85 : x
  2. Step 2: Convert to fraction form
    20,909,930.27/28,856,349.38 = 11,742,769.85/x
  3. Step 3: Cross multiply
    20,909,930.27x = 28,856,349.38 × 11,742,769.85
  4. Step 4: Simplify right side
    20,909,930.27x = 338,853,469,421,816.31
  5. Step 5: Solve for x
    x = 338,853,469,421,816.31/20,909,930.27
  6. Step 6: Final answer
    x = 16,205,384.96

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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.