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Finding the Fourth Proportional to 12,668.52, 19,010.94 and 6,829.20

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Solution

The fourth proportional to 12,668.52, 19,010.94 and 6,829.20 is: 10,248.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.52 : 19,010.94 = 6,829.20 : x
  2. Step 2: Convert to fraction form
    12,668.52/19,010.94 = 6,829.20/x
  3. Step 3: Cross multiply
    12,668.52x = 19,010.94 × 6,829.20
  4. Step 4: Simplify right side
    12,668.52x = 129,829,382.25
  5. Step 5: Solve for x
    x = 129,829,382.25/12,668.52
  6. Step 6: Final answer
    x = 10,248.19

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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.