Home / 13,428,204.78-20,146,316.25-12,626,136.30

Finding the Fourth Proportional to 13,428,204.78, 20,146,316.25 and 12,626,136.30

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Solution

The fourth proportional to 13,428,204.78, 20,146,316.25 and 12,626,136.30 is: 18,942,974.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,204.78 : 20,146,316.25 = 12,626,136.30 : x
  2. Step 2: Convert to fraction form
    13,428,204.78/20,146,316.25 = 12,626,136.30/x
  3. Step 3: Cross multiply
    13,428,204.78x = 20,146,316.25 × 12,626,136.30
  4. Step 4: Simplify right side
    13,428,204.78x = 254,370,134,915,404.88
  5. Step 5: Solve for x
    x = 254,370,134,915,404.88/13,428,204.78
  6. Step 6: Final answer
    x = 18,942,974.07

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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.