Home / 28,028.68-38,679.84-15,453.88

Finding the Fourth Proportional to 28,028.68, 38,679.84 and 15,453.88

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Solution

The fourth proportional to 28,028.68, 38,679.84 and 15,453.88 is: 21,326.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.68 : 38,679.84 = 15,453.88 : x
  2. Step 2: Convert to fraction form
    28,028.68/38,679.84 = 15,453.88/x
  3. Step 3: Cross multiply
    28,028.68x = 38,679.84 × 15,453.88
  4. Step 4: Simplify right side
    28,028.68x = 597,753,605.78
  5. Step 5: Solve for x
    x = 597,753,605.78/28,028.68
  6. Step 6: Final answer
    x = 21,326.50

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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.