Home / 39,318.67-54,260.39-21,413.65

Finding the Fourth Proportional to 39,318.67, 54,260.39 and 21,413.65

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Solution

The fourth proportional to 39,318.67, 54,260.39 and 21,413.65 is: 29,551.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,318.67 : 54,260.39 = 21,413.65 : x
  2. Step 2: Convert to fraction form
    39,318.67/54,260.39 = 21,413.65/x
  3. Step 3: Cross multiply
    39,318.67x = 54,260.39 × 21,413.65
  4. Step 4: Simplify right side
    39,318.67x = 1,161,913,000.32
  5. Step 5: Solve for x
    x = 1,161,913,000.32/39,318.67
  6. Step 6: Final answer
    x = 29,551.18

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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.