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Finding the Fourth Proportional to 12,899.33, 17,794.49 and 8,425.70

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Solution

The fourth proportional to 12,899.33, 17,794.49 and 8,425.70 is: 11,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.33 : 17,794.49 = 8,425.70 : x
  2. Step 2: Convert to fraction form
    12,899.33/17,794.49 = 8,425.70/x
  3. Step 3: Cross multiply
    12,899.33x = 17,794.49 × 8,425.70
  4. Step 4: Simplify right side
    12,899.33x = 149,931,034.39
  5. Step 5: Solve for x
    x = 149,931,034.39/12,899.33
  6. Step 6: Final answer
    x = 11,623.16

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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.