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Finding the Fourth Proportional to 12,899.33, 17,800.04 and 7,156.97

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Solution

The fourth proportional to 12,899.33, 17,800.04 and 7,156.97 is: 9,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.33 : 17,800.04 = 7,156.97 : x
  2. Step 2: Convert to fraction form
    12,899.33/17,800.04 = 7,156.97/x
  3. Step 3: Cross multiply
    12,899.33x = 17,800.04 × 7,156.97
  4. Step 4: Simplify right side
    12,899.33x = 127,394,307.66
  5. Step 5: Solve for x
    x = 127,394,307.66/12,899.33
  6. Step 6: Final answer
    x = 9,876.04

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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.