Home / 21,890.88-32,846.40-9,414.72

Finding the Fourth Proportional to 21,890.88, 32,846.40 and 9,414.72

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Solution

The fourth proportional to 21,890.88, 32,846.40 and 9,414.72 is: 14,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.88 : 32,846.40 = 9,414.72 : x
  2. Step 2: Convert to fraction form
    21,890.88/32,846.40 = 9,414.72/x
  3. Step 3: Cross multiply
    21,890.88x = 32,846.40 × 9,414.72
  4. Step 4: Simplify right side
    21,890.88x = 309,239,659.01
  5. Step 5: Solve for x
    x = 309,239,659.01/21,890.88
  6. Step 6: Final answer
    x = 14,126.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.