Home / 21,270.84-29,353.26-11,839.20

Finding the Fourth Proportional to 21,270.84, 29,353.26 and 11,839.20

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Solution

The fourth proportional to 21,270.84, 29,353.26 and 11,839.20 is: 16,337.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.84 : 29,353.26 = 11,839.20 : x
  2. Step 2: Convert to fraction form
    21,270.84/29,353.26 = 11,839.20/x
  3. Step 3: Cross multiply
    21,270.84x = 29,353.26 × 11,839.20
  4. Step 4: Simplify right side
    21,270.84x = 347,519,115.79
  5. Step 5: Solve for x
    x = 347,519,115.79/21,270.84
  6. Step 6: Final answer
    x = 16,337.82

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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.