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Finding the Fourth Proportional to 12,328.08, 17,012.88 and 7,022.88

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Solution

The fourth proportional to 12,328.08, 17,012.88 and 7,022.88 is: 9,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.08 : 17,012.88 = 7,022.88 : x
  2. Step 2: Convert to fraction form
    12,328.08/17,012.88 = 7,022.88/x
  3. Step 3: Cross multiply
    12,328.08x = 17,012.88 × 7,022.88
  4. Step 4: Simplify right side
    12,328.08x = 119,479,414.69
  5. Step 5: Solve for x
    x = 119,479,414.69/12,328.08
  6. Step 6: Final answer
    x = 9,691.65

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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.