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Finding the Fourth Proportional to 12,571.27, 17,347.91 and 6,905.59

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Solution

The fourth proportional to 12,571.27, 17,347.91 and 6,905.59 is: 9,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.27 : 17,347.91 = 6,905.59 : x
  2. Step 2: Convert to fraction form
    12,571.27/17,347.91 = 6,905.59/x
  3. Step 3: Cross multiply
    12,571.27x = 17,347.91 × 6,905.59
  4. Step 4: Simplify right side
    12,571.27x = 119,797,475.92
  5. Step 5: Solve for x
    x = 119,797,475.92/12,571.27
  6. Step 6: Final answer
    x = 9,529.47

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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.