Home / 18,928,758.78-28,397,916.36-5,281,893.70

Finding the Fourth Proportional to 18,928,758.78, 28,397,916.36 and 5,281,893.70

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Solution

The fourth proportional to 18,928,758.78, 28,397,916.36 and 5,281,893.70 is: 7,924,173.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,758.78 : 28,397,916.36 = 5,281,893.70 : x
  2. Step 2: Convert to fraction form
    18,928,758.78/28,397,916.36 = 5,281,893.70/x
  3. Step 3: Cross multiply
    18,928,758.78x = 28,397,916.36 × 5,281,893.70
  4. Step 4: Simplify right side
    18,928,758.78x = 149,994,775,444,016.12
  5. Step 5: Solve for x
    x = 149,994,775,444,016.12/18,928,758.78
  6. Step 6: Final answer
    x = 7,924,173.86

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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.