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Finding the Fourth Proportional to 12,668.31, 19,000.76 and 3,308.99

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Solution

The fourth proportional to 12,668.31, 19,000.76 and 3,308.99 is: 4,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.31 : 19,000.76 = 3,308.99 : x
  2. Step 2: Convert to fraction form
    12,668.31/19,000.76 = 3,308.99/x
  3. Step 3: Cross multiply
    12,668.31x = 19,000.76 × 3,308.99
  4. Step 4: Simplify right side
    12,668.31x = 62,873,213.28
  5. Step 5: Solve for x
    x = 62,873,213.28/12,668.31
  6. Step 6: Final answer
    x = 4,963.03

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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.