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Finding the Fourth Proportional to 12,808.33, 17,675.54 and 7,143.05

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Solution

The fourth proportional to 12,808.33, 17,675.54 and 7,143.05 is: 9,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.33 : 17,675.54 = 7,143.05 : x
  2. Step 2: Convert to fraction form
    12,808.33/17,675.54 = 7,143.05/x
  3. Step 3: Cross multiply
    12,808.33x = 17,675.54 × 7,143.05
  4. Step 4: Simplify right side
    12,808.33x = 126,257,266.00
  5. Step 5: Solve for x
    x = 126,257,266.00/12,808.33
  6. Step 6: Final answer
    x = 9,857.43

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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.