Home / 28,286.82-39,034.26-15,710.76

Finding the Fourth Proportional to 28,286.82, 39,034.26 and 15,710.76

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Solution

The fourth proportional to 28,286.82, 39,034.26 and 15,710.76 is: 21,679.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.82 : 39,034.26 = 15,710.76 : x
  2. Step 2: Convert to fraction form
    28,286.82/39,034.26 = 15,710.76/x
  3. Step 3: Cross multiply
    28,286.82x = 39,034.26 × 15,710.76
  4. Step 4: Simplify right side
    28,286.82x = 613,257,890.64
  5. Step 5: Solve for x
    x = 613,257,890.64/28,286.82
  6. Step 6: Final answer
    x = 21,679.99

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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.