Home / 14,278.26-21,413.28-4,917.90

Finding the Fourth Proportional to 14,278.26, 21,413.28 and 4,917.90

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Solution

The fourth proportional to 14,278.26, 21,413.28 and 4,917.90 is: 7,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.26 : 21,413.28 = 4,917.90 : x
  2. Step 2: Convert to fraction form
    14,278.26/21,413.28 = 4,917.90/x
  3. Step 3: Cross multiply
    14,278.26x = 21,413.28 × 4,917.90
  4. Step 4: Simplify right side
    14,278.26x = 105,308,369.71
  5. Step 5: Solve for x
    x = 105,308,369.71/14,278.26
  6. Step 6: Final answer
    x = 7,375.43

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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.