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Finding the Fourth Proportional to 18,448,978.40, 27,673,467.60 and 13,063,709.60

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Solution

The fourth proportional to 18,448,978.40, 27,673,467.60 and 13,063,709.60 is: 19,595,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448,978.40 : 27,673,467.60 = 13,063,709.60 : x
  2. Step 2: Convert to fraction form
    18,448,978.40/27,673,467.60 = 13,063,709.60/x
  3. Step 3: Cross multiply
    18,448,978.40x = 27,673,467.60 × 13,063,709.60
  4. Step 4: Simplify right side
    18,448,978.40x = 361,518,144,351,409
  5. Step 5: Solve for x
    x = 361,518,144,351,409/18,448,978.40
  6. Step 6: Final answer
    x = 19,595,564.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.