Home / 21,930.94-32,896.39-7,139.83

Finding the Fourth Proportional to 21,930.94, 32,896.39 and 7,139.83

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Solution

The fourth proportional to 21,930.94, 32,896.39 and 7,139.83 is: 10,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.94 : 32,896.39 = 7,139.83 : x
  2. Step 2: Convert to fraction form
    21,930.94/32,896.39 = 7,139.83/x
  3. Step 3: Cross multiply
    21,930.94x = 32,896.39 × 7,139.83
  4. Step 4: Simplify right side
    21,930.94x = 234,874,756.01
  5. Step 5: Solve for x
    x = 234,874,756.01/21,930.94
  6. Step 6: Final answer
    x = 10,709.74

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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.