Home / 28,108.08-42,163.94-8,388.63

Finding the Fourth Proportional to 28,108.08, 42,163.94 and 8,388.63

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Solution

The fourth proportional to 28,108.08, 42,163.94 and 8,388.63 is: 12,583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.08 : 42,163.94 = 8,388.63 : x
  2. Step 2: Convert to fraction form
    28,108.08/42,163.94 = 8,388.63/x
  3. Step 3: Cross multiply
    28,108.08x = 42,163.94 × 8,388.63
  4. Step 4: Simplify right side
    28,108.08x = 353,697,712.97
  5. Step 5: Solve for x
    x = 353,697,712.97/28,108.08
  6. Step 6: Final answer
    x = 12,583.49

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Double scale
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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.