Home / 20,185.25-30,284.04-10,331.51

Finding the Fourth Proportional to 20,185.25, 30,284.04 and 10,331.51

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Solution

The fourth proportional to 20,185.25, 30,284.04 and 10,331.51 is: 15,500.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.25 : 30,284.04 = 10,331.51 : x
  2. Step 2: Convert to fraction form
    20,185.25/30,284.04 = 10,331.51/x
  3. Step 3: Cross multiply
    20,185.25x = 30,284.04 × 10,331.51
  4. Step 4: Simplify right side
    20,185.25x = 312,879,862.10
  5. Step 5: Solve for x
    x = 312,879,862.10/20,185.25
  6. Step 6: Final answer
    x = 15,500.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.