Home / 11,905.94-16,427.10-7,188.50

Finding the Fourth Proportional to 11,905.94, 16,427.10 and 7,188.50

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Solution

The fourth proportional to 11,905.94, 16,427.10 and 7,188.50 is: 9,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.94 : 16,427.10 = 7,188.50 : x
  2. Step 2: Convert to fraction form
    11,905.94/16,427.10 = 7,188.50/x
  3. Step 3: Cross multiply
    11,905.94x = 16,427.10 × 7,188.50
  4. Step 4: Simplify right side
    11,905.94x = 118,086,208.35
  5. Step 5: Solve for x
    x = 118,086,208.35/11,905.94
  6. Step 6: Final answer
    x = 9,918.26

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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.