Home / 12,219.42-18,329.21-3,454.41

Finding the Fourth Proportional to 12,219.42, 18,329.21 and 3,454.41

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Solution

The fourth proportional to 12,219.42, 18,329.21 and 3,454.41 is: 5,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.42 : 18,329.21 = 3,454.41 : x
  2. Step 2: Convert to fraction form
    12,219.42/18,329.21 = 3,454.41/x
  3. Step 3: Cross multiply
    12,219.42x = 18,329.21 × 3,454.41
  4. Step 4: Simplify right side
    12,219.42x = 63,316,606.32
  5. Step 5: Solve for x
    x = 63,316,606.32/12,219.42
  6. Step 6: Final answer
    x = 5,181.64

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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.