Home / 28,629.12-42,952.86-20,325.54

Finding the Fourth Proportional to 28,629.12, 42,952.86 and 20,325.54

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Solution

The fourth proportional to 28,629.12, 42,952.86 and 20,325.54 is: 30,494.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.12 : 42,952.86 = 20,325.54 : x
  2. Step 2: Convert to fraction form
    28,629.12/42,952.86 = 20,325.54/x
  3. Step 3: Cross multiply
    28,629.12x = 42,952.86 × 20,325.54
  4. Step 4: Simplify right side
    28,629.12x = 873,040,074.04
  5. Step 5: Solve for x
    x = 873,040,074.04/28,629.12
  6. Step 6: Final answer
    x = 30,494.83

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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.