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Finding the Fourth Proportional to 21,611.84, 29,824.09 and 12,051.68

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Solution

The fourth proportional to 21,611.84, 29,824.09 and 12,051.68 is: 16,631.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.84 : 29,824.09 = 12,051.68 : x
  2. Step 2: Convert to fraction form
    21,611.84/29,824.09 = 12,051.68/x
  3. Step 3: Cross multiply
    21,611.84x = 29,824.09 × 12,051.68
  4. Step 4: Simplify right side
    21,611.84x = 359,430,209.72
  5. Step 5: Solve for x
    x = 359,430,209.72/21,611.84
  6. Step 6: Final answer
    x = 16,631.17

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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.