Home / 21,546.30-32,246.55-18,921.90

Finding the Fourth Proportional to 21,546.30, 32,246.55 and 18,921.90

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Solution

The fourth proportional to 21,546.30, 32,246.55 and 18,921.90 is: 28,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.30 : 32,246.55 = 18,921.90 : x
  2. Step 2: Convert to fraction form
    21,546.30/32,246.55 = 18,921.90/x
  3. Step 3: Cross multiply
    21,546.30x = 32,246.55 × 18,921.90
  4. Step 4: Simplify right side
    21,546.30x = 610,165,994.45
  5. Step 5: Solve for x
    x = 610,165,994.45/21,546.30
  6. Step 6: Final answer
    x = 28,318.83

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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.