Home / 21,221.43-31,821.20-9,524.64

Finding the Fourth Proportional to 21,221.43, 31,821.20 and 9,524.64

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Solution

The fourth proportional to 21,221.43, 31,821.20 and 9,524.64 is: 14,282.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.43 : 31,821.20 = 9,524.64 : x
  2. Step 2: Convert to fraction form
    21,221.43/31,821.20 = 9,524.64/x
  3. Step 3: Cross multiply
    21,221.43x = 31,821.20 × 9,524.64
  4. Step 4: Simplify right side
    21,221.43x = 303,085,426.74
  5. Step 5: Solve for x
    x = 303,085,426.74/21,221.43
  6. Step 6: Final answer
    x = 14,282.05

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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.