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Finding the Fourth Proportional to 21,393.64, 29,523.23 and 11,962.23

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Solution

The fourth proportional to 21,393.64, 29,523.23 and 11,962.23 is: 16,507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.64 : 29,523.23 = 11,962.23 : x
  2. Step 2: Convert to fraction form
    21,393.64/29,523.23 = 11,962.23/x
  3. Step 3: Cross multiply
    21,393.64x = 29,523.23 × 11,962.23
  4. Step 4: Simplify right side
    21,393.64x = 353,163,667.60
  5. Step 5: Solve for x
    x = 353,163,667.60/21,393.64
  6. Step 6: Final answer
    x = 16,507.88

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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.