Home / 28,028.94-38,679.78-15,453.70

Finding the Fourth Proportional to 28,028.94, 38,679.78 and 15,453.70

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Solution

The fourth proportional to 28,028.94, 38,679.78 and 15,453.70 is: 21,326.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.94 : 38,679.78 = 15,453.70 : x
  2. Step 2: Convert to fraction form
    28,028.94/38,679.78 = 15,453.70/x
  3. Step 3: Cross multiply
    28,028.94x = 38,679.78 × 15,453.70
  4. Step 4: Simplify right side
    28,028.94x = 597,745,716.19
  5. Step 5: Solve for x
    x = 597,745,716.19/28,028.94
  6. Step 6: Final answer
    x = 21,326.02

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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.