Home / 21,633.17-32,435.80-8,486.87

Finding the Fourth Proportional to 21,633.17, 32,435.80 and 8,486.87

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Solution

The fourth proportional to 21,633.17, 32,435.80 and 8,486.87 is: 12,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.17 : 32,435.80 = 8,486.87 : x
  2. Step 2: Convert to fraction form
    21,633.17/32,435.80 = 8,486.87/x
  3. Step 3: Cross multiply
    21,633.17x = 32,435.80 × 8,486.87
  4. Step 4: Simplify right side
    21,633.17x = 275,278,417.95
  5. Step 5: Solve for x
    x = 275,278,417.95/21,633.17
  6. Step 6: Final answer
    x = 12,724.83

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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.