Home / 12,228.08-18,339.78-3,460.88

Finding the Fourth Proportional to 12,228.08, 18,339.78 and 3,460.88

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Solution

The fourth proportional to 12,228.08, 18,339.78 and 3,460.88 is: 5,190.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.08 : 18,339.78 = 3,460.88 : x
  2. Step 2: Convert to fraction form
    12,228.08/18,339.78 = 3,460.88/x
  3. Step 3: Cross multiply
    12,228.08x = 18,339.78 × 3,460.88
  4. Step 4: Simplify right side
    12,228.08x = 63,471,777.81
  5. Step 5: Solve for x
    x = 63,471,777.81/12,228.08
  6. Step 6: Final answer
    x = 5,190.66

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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.