Home / 20,932.68-28,878.95-11,855.96

Finding the Fourth Proportional to 20,932.68, 28,878.95 and 11,855.96

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Solution

The fourth proportional to 20,932.68, 28,878.95 and 11,855.96 is: 16,356.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.68 : 28,878.95 = 11,855.96 : x
  2. Step 2: Convert to fraction form
    20,932.68/28,878.95 = 11,855.96/x
  3. Step 3: Cross multiply
    20,932.68x = 28,878.95 × 11,855.96
  4. Step 4: Simplify right side
    20,932.68x = 342,387,676.04
  5. Step 5: Solve for x
    x = 342,387,676.04/20,932.68
  6. Step 6: Final answer
    x = 16,356.61

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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.