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Finding the Fourth Proportional to 21,796.37, 29,883.08 and 21,402.71

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Solution

The fourth proportional to 21,796.37, 29,883.08 and 21,402.71 is: 29,343.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,796.37 : 29,883.08 = 21,402.71 : x
  2. Step 2: Convert to fraction form
    21,796.37/29,883.08 = 21,402.71/x
  3. Step 3: Cross multiply
    21,796.37x = 29,883.08 × 21,402.71
  4. Step 4: Simplify right side
    21,796.37x = 639,578,638.72
  5. Step 5: Solve for x
    x = 639,578,638.72/21,796.37
  6. Step 6: Final answer
    x = 29,343.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.