Home / 20,616,906.27-28,447,916.94-11,915,889.12

Finding the Fourth Proportional to 20,616,906.27, 28,447,916.94 and 11,915,889.12

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Solution

The fourth proportional to 20,616,906.27, 28,447,916.94 and 11,915,889.12 is: 16,441,953.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616,906.27 : 28,447,916.94 = 11,915,889.12 : x
  2. Step 2: Convert to fraction form
    20,616,906.27/28,447,916.94 = 11,915,889.12/x
  3. Step 3: Cross multiply
    20,616,906.27x = 28,447,916.94 × 11,915,889.12
  4. Step 4: Simplify right side
    20,616,906.27x = 338,982,223,952,009.69
  5. Step 5: Solve for x
    x = 338,982,223,952,009.69/20,616,906.27
  6. Step 6: Final answer
    x = 16,441,953.97

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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.