Home / 21,998.12-30,357.15-11,926.58

Finding the Fourth Proportional to 21,998.12, 30,357.15 and 11,926.58

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Solution

The fourth proportional to 21,998.12, 30,357.15 and 11,926.58 is: 16,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.12 : 30,357.15 = 11,926.58 : x
  2. Step 2: Convert to fraction form
    21,998.12/30,357.15 = 11,926.58/x
  3. Step 3: Cross multiply
    21,998.12x = 30,357.15 × 11,926.58
  4. Step 4: Simplify right side
    21,998.12x = 362,056,978.05
  5. Step 5: Solve for x
    x = 362,056,978.05/21,998.12
  6. Step 6: Final answer
    x = 16,458.54

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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.