Home / 12,179.04-18,268.68-4,281.20

Finding the Fourth Proportional to 12,179.04, 18,268.68 and 4,281.20

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Solution

The fourth proportional to 12,179.04, 18,268.68 and 4,281.20 is: 6,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.04 : 18,268.68 = 4,281.20 : x
  2. Step 2: Convert to fraction form
    12,179.04/18,268.68 = 4,281.20/x
  3. Step 3: Cross multiply
    12,179.04x = 18,268.68 × 4,281.20
  4. Step 4: Simplify right side
    12,179.04x = 78,211,872.82
  5. Step 5: Solve for x
    x = 78,211,872.82/12,179.04
  6. Step 6: Final answer
    x = 6,421.84

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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.