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Finding the Fourth Proportional to 12,474.79, 17,215.28 and 6,885.79

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Solution

The fourth proportional to 12,474.79, 17,215.28 and 6,885.79 is: 9,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.79 : 17,215.28 = 6,885.79 : x
  2. Step 2: Convert to fraction form
    12,474.79/17,215.28 = 6,885.79/x
  3. Step 3: Cross multiply
    12,474.79x = 17,215.28 × 6,885.79
  4. Step 4: Simplify right side
    12,474.79x = 118,540,768.44
  5. Step 5: Solve for x
    x = 118,540,768.44/12,474.79
  6. Step 6: Final answer
    x = 9,502.43

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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.