Home / 28,156.14-42,246.52-21,906.79

Finding the Fourth Proportional to 28,156.14, 42,246.52 and 21,906.79

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Solution

The fourth proportional to 28,156.14, 42,246.52 and 21,906.79 is: 32,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.14 : 42,246.52 = 21,906.79 : x
  2. Step 2: Convert to fraction form
    28,156.14/42,246.52 = 21,906.79/x
  3. Step 3: Cross multiply
    28,156.14x = 42,246.52 × 21,906.79
  4. Step 4: Simplify right side
    28,156.14x = 925,485,481.49
  5. Step 5: Solve for x
    x = 925,485,481.49/28,156.14
  6. Step 6: Final answer
    x = 32,869.76

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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.