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Finding the Fourth Proportional to 21,704.93, 29,952.95 and 12,635.69

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Solution

The fourth proportional to 21,704.93, 29,952.95 and 12,635.69 is: 17,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,704.93 : 29,952.95 = 12,635.69 : x
  2. Step 2: Convert to fraction form
    21,704.93/29,952.95 = 12,635.69/x
  3. Step 3: Cross multiply
    21,704.93x = 29,952.95 × 12,635.69
  4. Step 4: Simplify right side
    21,704.93x = 378,476,190.79
  5. Step 5: Solve for x
    x = 378,476,190.79/21,704.93
  6. Step 6: Final answer
    x = 17,437.34

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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.