Home / 21,643.11-32,464.49-12,287.43

Finding the Fourth Proportional to 21,643.11, 32,464.49 and 12,287.43

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Solution

The fourth proportional to 21,643.11, 32,464.49 and 12,287.43 is: 18,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.11 : 32,464.49 = 12,287.43 : x
  2. Step 2: Convert to fraction form
    21,643.11/32,464.49 = 12,287.43/x
  3. Step 3: Cross multiply
    21,643.11x = 32,464.49 × 12,287.43
  4. Step 4: Simplify right side
    21,643.11x = 398,905,086.92
  5. Step 5: Solve for x
    x = 398,905,086.92/21,643.11
  6. Step 6: Final answer
    x = 18,431.04

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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.