Home / 21,998.12-30,357.31-11,926.53

Finding the Fourth Proportional to 21,998.12, 30,357.31 and 11,926.53

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Solution

The fourth proportional to 21,998.12, 30,357.31 and 11,926.53 is: 16,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.12 : 30,357.31 = 11,926.53 : x
  2. Step 2: Convert to fraction form
    21,998.12/30,357.31 = 11,926.53/x
  3. Step 3: Cross multiply
    21,998.12x = 30,357.31 × 11,926.53
  4. Step 4: Simplify right side
    21,998.12x = 362,057,377.75
  5. Step 5: Solve for x
    x = 362,057,377.75/21,998.12
  6. Step 6: Final answer
    x = 16,458.56

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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.