Home / 19,479.49-29,198.27-8,391.40

Finding the Fourth Proportional to 19,479.49, 29,198.27 and 8,391.40

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Solution

The fourth proportional to 19,479.49, 29,198.27 and 8,391.40 is: 12,578.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.49 : 29,198.27 = 8,391.40 : x
  2. Step 2: Convert to fraction form
    19,479.49/29,198.27 = 8,391.40/x
  3. Step 3: Cross multiply
    19,479.49x = 29,198.27 × 8,391.40
  4. Step 4: Simplify right side
    19,479.49x = 245,014,310.86
  5. Step 5: Solve for x
    x = 245,014,310.86/19,479.49
  6. Step 6: Final answer
    x = 12,578.07

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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.