Home / 18,936,143.88-28,404,214.74-15,743,560.20

Finding the Fourth Proportional to 18,936,143.88, 28,404,214.74 and 15,743,560.20

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Solution

The fourth proportional to 18,936,143.88, 28,404,214.74 and 15,743,560.20 is: 23,615,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936,143.88 : 28,404,214.74 = 15,743,560.20 : x
  2. Step 2: Convert to fraction form
    18,936,143.88/28,404,214.74 = 15,743,560.20/x
  3. Step 3: Cross multiply
    18,936,143.88x = 28,404,214.74 × 15,743,560.20
  4. Step 4: Simplify right side
    18,936,143.88x = 447,183,464,692,917.31
  5. Step 5: Solve for x
    x = 447,183,464,692,917.31/18,936,143.88
  6. Step 6: Final answer
    x = 23,615,339.40

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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.