Home / 12,668.84-17,479.50-8,192.78

Finding the Fourth Proportional to 12,668.84, 17,479.50 and 8,192.78

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Solution

The fourth proportional to 12,668.84, 17,479.50 and 8,192.78 is: 11,303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.84 : 17,479.50 = 8,192.78 : x
  2. Step 2: Convert to fraction form
    12,668.84/17,479.50 = 8,192.78/x
  3. Step 3: Cross multiply
    12,668.84x = 17,479.50 × 8,192.78
  4. Step 4: Simplify right side
    12,668.84x = 143,205,698.01
  5. Step 5: Solve for x
    x = 143,205,698.01/12,668.84
  6. Step 6: Final answer
    x = 11,303.77

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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.