Home / 20,927.08-28,884.35-11,979.75

Finding the Fourth Proportional to 20,927.08, 28,884.35 and 11,979.75

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Solution

The fourth proportional to 20,927.08, 28,884.35 and 11,979.75 is: 16,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.08 : 28,884.35 = 11,979.75 : x
  2. Step 2: Convert to fraction form
    20,927.08/28,884.35 = 11,979.75/x
  3. Step 3: Cross multiply
    20,927.08x = 28,884.35 × 11,979.75
  4. Step 4: Simplify right side
    20,927.08x = 346,027,232.01
  5. Step 5: Solve for x
    x = 346,027,232.01/20,927.08
  6. Step 6: Final answer
    x = 16,534.91

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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.