Home / 12,183.78-16,808.13-7,148.28

Finding the Fourth Proportional to 12,183.78, 16,808.13 and 7,148.28

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Solution

The fourth proportional to 12,183.78, 16,808.13 and 7,148.28 is: 9,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.78 : 16,808.13 = 7,148.28 : x
  2. Step 2: Convert to fraction form
    12,183.78/16,808.13 = 7,148.28/x
  3. Step 3: Cross multiply
    12,183.78x = 16,808.13 × 7,148.28
  4. Step 4: Simplify right side
    12,183.78x = 120,149,219.52
  5. Step 5: Solve for x
    x = 120,149,219.52/12,183.78
  6. Step 6: Final answer
    x = 9,861.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.