Home / 13,761.75-18,991.26-9,054.48

Finding the Fourth Proportional to 13,761.75, 18,991.26 and 9,054.48

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Solution

The fourth proportional to 13,761.75, 18,991.26 and 9,054.48 is: 12,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.75 : 18,991.26 = 9,054.48 : x
  2. Step 2: Convert to fraction form
    13,761.75/18,991.26 = 9,054.48/x
  3. Step 3: Cross multiply
    13,761.75x = 18,991.26 × 9,054.48
  4. Step 4: Simplify right side
    13,761.75x = 171,955,983.84
  5. Step 5: Solve for x
    x = 171,955,983.84/13,761.75
  6. Step 6: Final answer
    x = 12,495.21

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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.