Home / 20,563,908.28-28,378,193.73-11,397,141.52

Finding the Fourth Proportional to 20,563,908.28, 28,378,193.73 and 11,397,141.52

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Solution

The fourth proportional to 20,563,908.28, 28,378,193.73 and 11,397,141.52 is: 15,728,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563,908.28 : 28,378,193.73 = 11,397,141.52 : x
  2. Step 2: Convert to fraction form
    20,563,908.28/28,378,193.73 = 11,397,141.52/x
  3. Step 3: Cross multiply
    20,563,908.28x = 28,378,193.73 × 11,397,141.52
  4. Step 4: Simplify right side
    20,563,908.28x = 323,430,289,823,910
  5. Step 5: Solve for x
    x = 323,430,289,823,910/20,563,908.28
  6. Step 6: Final answer
    x = 15,728,055.46

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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.