Home / 18,706,651.20-28,038,981.60-7,922,116.80

Finding the Fourth Proportional to 18,706,651.20, 28,038,981.60 and 7,922,116.80

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Solution

The fourth proportional to 18,706,651.20, 28,038,981.60 and 7,922,116.80 is: 11,874,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706,651.20 : 28,038,981.60 = 7,922,116.80 : x
  2. Step 2: Convert to fraction form
    18,706,651.20/28,038,981.60 = 7,922,116.80/x
  3. Step 3: Cross multiply
    18,706,651.20x = 28,038,981.60 × 7,922,116.80
  4. Step 4: Simplify right side
    18,706,651.20x = 222,128,087,188,250.88
  5. Step 5: Solve for x
    x = 222,128,087,188,250.88/18,706,651.20
  6. Step 6: Final answer
    x = 11,874,283.90

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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.