Home / 28,064.82-38,729.26-15,489.57

Finding the Fourth Proportional to 28,064.82, 38,729.26 and 15,489.57

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Solution

The fourth proportional to 28,064.82, 38,729.26 and 15,489.57 is: 21,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.82 : 38,729.26 = 15,489.57 : x
  2. Step 2: Convert to fraction form
    28,064.82/38,729.26 = 15,489.57/x
  3. Step 3: Cross multiply
    28,064.82x = 38,729.26 × 15,489.57
  4. Step 4: Simplify right side
    28,064.82x = 599,899,583.82
  5. Step 5: Solve for x
    x = 599,899,583.82/28,064.82
  6. Step 6: Final answer
    x = 21,375.50

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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.