Home / 12,269.79-18,401.04-4,479.21

Finding the Fourth Proportional to 12,269.79, 18,401.04 and 4,479.21

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Solution

The fourth proportional to 12,269.79, 18,401.04 and 4,479.21 is: 6,717.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.79 : 18,401.04 = 4,479.21 : x
  2. Step 2: Convert to fraction form
    12,269.79/18,401.04 = 4,479.21/x
  3. Step 3: Cross multiply
    12,269.79x = 18,401.04 × 4,479.21
  4. Step 4: Simplify right side
    12,269.79x = 82,422,122.38
  5. Step 5: Solve for x
    x = 82,422,122.38/12,269.79
  6. Step 6: Final answer
    x = 6,717.48

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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.