Home / 12,479.57-17,198.13-8,936.63

Finding the Fourth Proportional to 12,479.57, 17,198.13 and 8,936.63

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Solution

The fourth proportional to 12,479.57, 17,198.13 and 8,936.63 is: 12,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.57 : 17,198.13 = 8,936.63 : x
  2. Step 2: Convert to fraction form
    12,479.57/17,198.13 = 8,936.63/x
  3. Step 3: Cross multiply
    12,479.57x = 17,198.13 × 8,936.63
  4. Step 4: Simplify right side
    12,479.57x = 153,693,367.50
  5. Step 5: Solve for x
    x = 153,693,367.50/12,479.57
  6. Step 6: Final answer
    x = 12,315.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.