Home / 12,792,021.40-19,188,032.10-5,214,856.60

Finding the Fourth Proportional to 12,792,021.40, 19,188,032.10 and 5,214,856.60

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Solution

The fourth proportional to 12,792,021.40, 19,188,032.10 and 5,214,856.60 is: 7,822,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792,021.40 : 19,188,032.10 = 5,214,856.60 : x
  2. Step 2: Convert to fraction form
    12,792,021.40/19,188,032.10 = 5,214,856.60/x
  3. Step 3: Cross multiply
    12,792,021.40x = 19,188,032.10 × 5,214,856.60
  4. Step 4: Simplify right side
    12,792,021.40x = 100,062,835,837,696.86
  5. Step 5: Solve for x
    x = 100,062,835,837,696.86/12,792,021.40
  6. Step 6: Final answer
    x = 7,822,284.90

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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.