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Finding the Fourth Proportional to 21,522.84, 29,700.92 and 11,962.49

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Solution

The fourth proportional to 21,522.84, 29,700.92 and 11,962.49 is: 16,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,522.84 : 29,700.92 = 11,962.49 : x
  2. Step 2: Convert to fraction form
    21,522.84/29,700.92 = 11,962.49/x
  3. Step 3: Cross multiply
    21,522.84x = 29,700.92 × 11,962.49
  4. Step 4: Simplify right side
    21,522.84x = 355,296,750.17
  5. Step 5: Solve for x
    x = 355,296,750.17/21,522.84
  6. Step 6: Final answer
    x = 16,507.89

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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.