Home / 20,926.58-28,883.66-11,979.25

Finding the Fourth Proportional to 20,926.58, 28,883.66 and 11,979.25

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Solution

The fourth proportional to 20,926.58, 28,883.66 and 11,979.25 is: 16,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.58 : 28,883.66 = 11,979.25 : x
  2. Step 2: Convert to fraction form
    20,926.58/28,883.66 = 11,979.25/x
  3. Step 3: Cross multiply
    20,926.58x = 28,883.66 × 11,979.25
  4. Step 4: Simplify right side
    20,926.58x = 346,004,451.95
  5. Step 5: Solve for x
    x = 346,004,451.95/20,926.58
  6. Step 6: Final answer
    x = 16,534.21

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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.