Home / 28,163.77-42,240.25-8,442.33

Finding the Fourth Proportional to 28,163.77, 42,240.25 and 8,442.33

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Solution

The fourth proportional to 28,163.77, 42,240.25 and 8,442.33 is: 12,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.77 : 42,240.25 = 8,442.33 : x
  2. Step 2: Convert to fraction form
    28,163.77/42,240.25 = 8,442.33/x
  3. Step 3: Cross multiply
    28,163.77x = 42,240.25 × 8,442.33
  4. Step 4: Simplify right side
    28,163.77x = 356,605,981.93
  5. Step 5: Solve for x
    x = 356,605,981.93/28,163.77
  6. Step 6: Final answer
    x = 12,661.87

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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.