Home / 39,189.40-54,081.34-21,284.41

Finding the Fourth Proportional to 39,189.40, 54,081.34 and 21,284.41

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Solution

The fourth proportional to 39,189.40, 54,081.34 and 21,284.41 is: 29,372.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.40 : 54,081.34 = 21,284.41 : x
  2. Step 2: Convert to fraction form
    39,189.40/54,081.34 = 21,284.41/x
  3. Step 3: Cross multiply
    39,189.40x = 54,081.34 × 21,284.41
  4. Step 4: Simplify right side
    39,189.40x = 1,151,089,413.91
  5. Step 5: Solve for x
    x = 1,151,089,413.91/39,189.40
  6. Step 6: Final answer
    x = 29,372.47

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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.