Home / 21,218.46-31,796.97-11,732.63

Finding the Fourth Proportional to 21,218.46, 31,796.97 and 11,732.63

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Solution

The fourth proportional to 21,218.46, 31,796.97 and 11,732.63 is: 17,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.46 : 31,796.97 = 11,732.63 : x
  2. Step 2: Convert to fraction form
    21,218.46/31,796.97 = 11,732.63/x
  3. Step 3: Cross multiply
    21,218.46x = 31,796.97 × 11,732.63
  4. Step 4: Simplify right side
    21,218.46x = 373,061,925.15
  5. Step 5: Solve for x
    x = 373,061,925.15/21,218.46
  6. Step 6: Final answer
    x = 17,581.95

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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.