Home / 20,390,481.73-28,139,662.61-11,223,977.41

Finding the Fourth Proportional to 20,390,481.73, 28,139,662.61 and 11,223,977.41

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Solution

The fourth proportional to 20,390,481.73, 28,139,662.61 and 11,223,977.41 is: 15,489,527.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,481.73 : 28,139,662.61 = 11,223,977.41 : x
  2. Step 2: Convert to fraction form
    20,390,481.73/28,139,662.61 = 11,223,977.41/x
  3. Step 3: Cross multiply
    20,390,481.73x = 28,139,662.61 × 11,223,977.41
  4. Step 4: Simplify right side
    20,390,481.73x = 315,838,937,459,661.62
  5. Step 5: Solve for x
    x = 315,838,937,459,661.62/20,390,481.73
  6. Step 6: Final answer
    x = 15,489,527.99

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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.