Home / 39,979.48-55,171-22,074.04

Finding the Fourth Proportional to 39,979.48, 55,171 and 22,074.04

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Solution

The fourth proportional to 39,979.48, 55,171 and 22,074.04 is: 30,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.48 : 55,171 = 22,074.04 : x
  2. Step 2: Convert to fraction form
    39,979.48/55,171 = 22,074.04/x
  3. Step 3: Cross multiply
    39,979.48x = 55,171 × 22,074.04
  4. Step 4: Simplify right side
    39,979.48x = 1,217,846,860.84
  5. Step 5: Solve for x
    x = 1,217,846,860.84/39,979.48
  6. Step 6: Final answer
    x = 30,461.80

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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.