Home / 18,997.28-28,489.44-7,314.56

Finding the Fourth Proportional to 18,997.28, 28,489.44 and 7,314.56

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Solution

The fourth proportional to 18,997.28, 28,489.44 and 7,314.56 is: 10,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.28 : 28,489.44 = 7,314.56 : x
  2. Step 2: Convert to fraction form
    18,997.28/28,489.44 = 7,314.56/x
  3. Step 3: Cross multiply
    18,997.28x = 28,489.44 × 7,314.56
  4. Step 4: Simplify right side
    18,997.28x = 208,387,718.25
  5. Step 5: Solve for x
    x = 208,387,718.25/18,997.28
  6. Step 6: Final answer
    x = 10,969.34

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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.