Home / 39,979.21-55,171.40-22,074.25

Finding the Fourth Proportional to 39,979.21, 55,171.40 and 22,074.25

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Solution

The fourth proportional to 39,979.21, 55,171.40 and 22,074.25 is: 30,462.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.21 : 55,171.40 = 22,074.25 : x
  2. Step 2: Convert to fraction form
    39,979.21/55,171.40 = 22,074.25/x
  3. Step 3: Cross multiply
    39,979.21x = 55,171.40 × 22,074.25
  4. Step 4: Simplify right side
    39,979.21x = 1,217,867,276.45
  5. Step 5: Solve for x
    x = 1,217,867,276.45/39,979.21
  6. Step 6: Final answer
    x = 30,462.51

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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.