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Finding the Fourth Proportional to 12,494.79, 17,241.80 and 6,905.79

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Solution

The fourth proportional to 12,494.79, 17,241.80 and 6,905.79 is: 9,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,494.79 : 17,241.80 = 6,905.79 : x
  2. Step 2: Convert to fraction form
    12,494.79/17,241.80 = 6,905.79/x
  3. Step 3: Cross multiply
    12,494.79x = 17,241.80 × 6,905.79
  4. Step 4: Simplify right side
    12,494.79x = 119,068,215.49
  5. Step 5: Solve for x
    x = 119,068,215.49/12,494.79
  6. Step 6: Final answer
    x = 9,529.43

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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.