Home / 18,087.36-27,131.28-9,317.76

Finding the Fourth Proportional to 18,087.36, 27,131.28 and 9,317.76

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Solution

The fourth proportional to 18,087.36, 27,131.28 and 9,317.76 is: 13,976.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.36 : 27,131.28 = 9,317.76 : x
  2. Step 2: Convert to fraction form
    18,087.36/27,131.28 = 9,317.76/x
  3. Step 3: Cross multiply
    18,087.36x = 27,131.28 × 9,317.76
  4. Step 4: Simplify right side
    18,087.36x = 252,802,755.53
  5. Step 5: Solve for x
    x = 252,802,755.53/18,087.36
  6. Step 6: Final answer
    x = 13,976.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.