Home / 18,487.58-27,720.26-7,229.51

Finding the Fourth Proportional to 18,487.58, 27,720.26 and 7,229.51

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Solution

The fourth proportional to 18,487.58, 27,720.26 and 7,229.51 is: 10,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.58 : 27,720.26 = 7,229.51 : x
  2. Step 2: Convert to fraction form
    18,487.58/27,720.26 = 7,229.51/x
  3. Step 3: Cross multiply
    18,487.58x = 27,720.26 × 7,229.51
  4. Step 4: Simplify right side
    18,487.58x = 200,403,758.27
  5. Step 5: Solve for x
    x = 200,403,758.27/18,487.58
  6. Step 6: Final answer
    x = 10,839.91

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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.