Home / 18,792,138.40-28,188,207.60-11,580,287.20

Finding the Fourth Proportional to 18,792,138.40, 28,188,207.60 and 11,580,287.20

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Solution

The fourth proportional to 18,792,138.40, 28,188,207.60 and 11,580,287.20 is: 17,370,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792,138.40 : 28,188,207.60 = 11,580,287.20 : x
  2. Step 2: Convert to fraction form
    18,792,138.40/28,188,207.60 = 11,580,287.20/x
  3. Step 3: Cross multiply
    18,792,138.40x = 28,188,207.60 × 11,580,287.20
  4. Step 4: Simplify right side
    18,792,138.40x = 326,427,539,661,222.69
  5. Step 5: Solve for x
    x = 326,427,539,661,222.69/18,792,138.40
  6. Step 6: Final answer
    x = 17,370,430.80

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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.