Home / 28,126.23-42,198.12-8,405.57

Finding the Fourth Proportional to 28,126.23, 42,198.12 and 8,405.57

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Solution

The fourth proportional to 28,126.23, 42,198.12 and 8,405.57 is: 12,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.23 : 42,198.12 = 8,405.57 : x
  2. Step 2: Convert to fraction form
    28,126.23/42,198.12 = 8,405.57/x
  3. Step 3: Cross multiply
    28,126.23x = 42,198.12 × 8,405.57
  4. Step 4: Simplify right side
    28,126.23x = 354,699,040.54
  5. Step 5: Solve for x
    x = 354,699,040.54/28,126.23
  6. Step 6: Final answer
    x = 12,610.97

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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.