Home / 20,934.00-28,887.25-11,979.45

Finding the Fourth Proportional to 20,934.00, 28,887.25 and 11,979.45

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Solution

The fourth proportional to 20,934.00, 28,887.25 and 11,979.45 is: 16,530.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.00 : 28,887.25 = 11,979.45 : x
  2. Step 2: Convert to fraction form
    20,934.00/28,887.25 = 11,979.45/x
  3. Step 3: Cross multiply
    20,934.00x = 28,887.25 × 11,979.45
  4. Step 4: Simplify right side
    20,934.00x = 346,053,467.85
  5. Step 5: Solve for x
    x = 346,053,467.85/20,934.00
  6. Step 6: Final answer
    x = 16,530.69

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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.