Home / 11,905.27-16,429.71-7,188.64

Finding the Fourth Proportional to 11,905.27, 16,429.71 and 7,188.64

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Solution

The fourth proportional to 11,905.27, 16,429.71 and 7,188.64 is: 9,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.27 : 16,429.71 = 7,188.64 : x
  2. Step 2: Convert to fraction form
    11,905.27/16,429.71 = 7,188.64/x
  3. Step 3: Cross multiply
    11,905.27x = 16,429.71 × 7,188.64
  4. Step 4: Simplify right side
    11,905.27x = 118,107,270.49
  5. Step 5: Solve for x
    x = 118,107,270.49/11,905.27
  6. Step 6: Final answer
    x = 9,920.59

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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.