Home / 18,706,651.70-28,038,982.35-7,922,117.30

Finding the Fourth Proportional to 18,706,651.70, 28,038,982.35 and 7,922,117.30

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Solution

The fourth proportional to 18,706,651.70, 28,038,982.35 and 7,922,117.30 is: 11,874,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706,651.70 : 28,038,982.35 = 7,922,117.30 : x
  2. Step 2: Convert to fraction form
    18,706,651.70/28,038,982.35 = 7,922,117.30/x
  3. Step 3: Cross multiply
    18,706,651.70x = 28,038,982.35 × 7,922,117.30
  4. Step 4: Simplify right side
    18,706,651.70x = 222,128,107,149,329.66
  5. Step 5: Solve for x
    x = 222,128,107,149,329.66/18,706,651.70
  6. Step 6: Final answer
    x = 11,874,284.65

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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.