Home / 39,318.23-54,259.88-21,413.31

Finding the Fourth Proportional to 39,318.23, 54,259.88 and 21,413.31

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Solution

The fourth proportional to 39,318.23, 54,259.88 and 21,413.31 is: 29,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,318.23 : 54,259.88 = 21,413.31 : x
  2. Step 2: Convert to fraction form
    39,318.23/54,259.88 = 21,413.31/x
  3. Step 3: Cross multiply
    39,318.23x = 54,259.88 × 21,413.31
  4. Step 4: Simplify right side
    39,318.23x = 1,161,883,523.94
  5. Step 5: Solve for x
    x = 1,161,883,523.94/39,318.23
  6. Step 6: Final answer
    x = 29,550.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.