Home / 15,932.58-21,986.55-9,213.90

Finding the Fourth Proportional to 15,932.58, 21,986.55 and 9,213.90

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Solution

The fourth proportional to 15,932.58, 21,986.55 and 9,213.90 is: 12,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,932.58 : 21,986.55 = 9,213.90 : x
  2. Step 2: Convert to fraction form
    15,932.58/21,986.55 = 9,213.90/x
  3. Step 3: Cross multiply
    15,932.58x = 21,986.55 × 9,213.90
  4. Step 4: Simplify right side
    15,932.58x = 202,581,873.05
  5. Step 5: Solve for x
    x = 202,581,873.05/15,932.58
  6. Step 6: Final answer
    x = 12,714.94

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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.