Home / 18,972,357.75-28,459,323.95-5,509,185.75

Finding the Fourth Proportional to 18,972,357.75, 28,459,323.95 and 5,509,185.75

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Solution

The fourth proportional to 18,972,357.75, 28,459,323.95 and 5,509,185.75 is: 8,264,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972,357.75 : 28,459,323.95 = 5,509,185.75 : x
  2. Step 2: Convert to fraction form
    18,972,357.75/28,459,323.95 = 5,509,185.75/x
  3. Step 3: Cross multiply
    18,972,357.75x = 28,459,323.95 × 5,509,185.75
  4. Step 4: Simplify right side
    18,972,357.75x = 156,787,701,932,427.78
  5. Step 5: Solve for x
    x = 156,787,701,932,427.78/18,972,357.75
  6. Step 6: Final answer
    x = 8,264,007.25

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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.