Home / 20,390,989.64-28,141,961.83-11,451,568.97

Finding the Fourth Proportional to 20,390,989.64, 28,141,961.83 and 11,451,568.97

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Solution

The fourth proportional to 20,390,989.64, 28,141,961.83 and 11,451,568.97 is: 15,804,510.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,989.64 : 28,141,961.83 = 11,451,568.97 : x
  2. Step 2: Convert to fraction form
    20,390,989.64/28,141,961.83 = 11,451,568.97/x
  3. Step 3: Cross multiply
    20,390,989.64x = 28,141,961.83 × 11,451,568.97
  4. Step 4: Simplify right side
    20,390,989.64x = 322,269,616,889,078.44
  5. Step 5: Solve for x
    x = 322,269,616,889,078.44/20,390,989.64
  6. Step 6: Final answer
    x = 15,804,510.85

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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.