Home / 20,935.25-28,892.00-11,985.65

Finding the Fourth Proportional to 20,935.25, 28,892.00 and 11,985.65

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Solution

The fourth proportional to 20,935.25, 28,892.00 and 11,985.65 is: 16,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.25 : 28,892.00 = 11,985.65 : x
  2. Step 2: Convert to fraction form
    20,935.25/28,892.00 = 11,985.65/x
  3. Step 3: Cross multiply
    20,935.25x = 28,892.00 × 11,985.65
  4. Step 4: Simplify right side
    20,935.25x = 346,289,339.87
  5. Step 5: Solve for x
    x = 346,289,339.87/20,935.25
  6. Step 6: Final answer
    x = 16,540.97

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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.