Home / 12,219.37-18,330.64-3,454.49

Finding the Fourth Proportional to 12,219.37, 18,330.64 and 3,454.49

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Solution

The fourth proportional to 12,219.37, 18,330.64 and 3,454.49 is: 5,182.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.37 : 18,330.64 = 3,454.49 : x
  2. Step 2: Convert to fraction form
    12,219.37/18,330.64 = 3,454.49/x
  3. Step 3: Cross multiply
    12,219.37x = 18,330.64 × 3,454.49
  4. Step 4: Simplify right side
    12,219.37x = 63,323,049.76
  5. Step 5: Solve for x
    x = 63,323,049.76/12,219.37
  6. Step 6: Final answer
    x = 5,182.19

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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.