Home / 21,623.31-29,839.77-12,191.88

Finding the Fourth Proportional to 21,623.31, 29,839.77 and 12,191.88

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Solution

The fourth proportional to 21,623.31, 29,839.77 and 12,191.88 is: 16,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.31 : 29,839.77 = 12,191.88 : x
  2. Step 2: Convert to fraction form
    21,623.31/29,839.77 = 12,191.88/x
  3. Step 3: Cross multiply
    21,623.31x = 29,839.77 × 12,191.88
  4. Step 4: Simplify right side
    21,623.31x = 363,802,895.07
  5. Step 5: Solve for x
    x = 363,802,895.07/21,623.31
  6. Step 6: Final answer
    x = 16,824.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.