Home / 31,128.79-46,693-8,942.26

Finding the Fourth Proportional to 31,128.79, 46,693 and 8,942.26

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Solution

The fourth proportional to 31,128.79, 46,693 and 8,942.26 is: 13,413.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.79 : 46,693 = 8,942.26 : x
  2. Step 2: Convert to fraction form
    31,128.79/46,693 = 8,942.26/x
  3. Step 3: Cross multiply
    31,128.79x = 46,693 × 8,942.26
  4. Step 4: Simplify right side
    31,128.79x = 417,540,946.18
  5. Step 5: Solve for x
    x = 417,540,946.18/31,128.79
  6. Step 6: Final answer
    x = 13,413.34

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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.