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Finding the Fourth Proportional to 21,677.68, 29,915.04 and 11,741.68

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Solution

The fourth proportional to 21,677.68, 29,915.04 and 11,741.68 is: 16,203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.68 : 29,915.04 = 11,741.68 : x
  2. Step 2: Convert to fraction form
    21,677.68/29,915.04 = 11,741.68/x
  3. Step 3: Cross multiply
    21,677.68x = 29,915.04 × 11,741.68
  4. Step 4: Simplify right side
    21,677.68x = 351,252,826.87
  5. Step 5: Solve for x
    x = 351,252,826.87/21,677.68
  6. Step 6: Final answer
    x = 16,203.43

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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.