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Finding the Fourth Proportional to 21,630.64, 29,852.04 and 12,201.16

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Solution

The fourth proportional to 21,630.64, 29,852.04 and 12,201.16 is: 16,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.64 : 29,852.04 = 12,201.16 : x
  2. Step 2: Convert to fraction form
    21,630.64/29,852.04 = 12,201.16/x
  3. Step 3: Cross multiply
    21,630.64x = 29,852.04 × 12,201.16
  4. Step 4: Simplify right side
    21,630.64x = 364,229,516.37
  5. Step 5: Solve for x
    x = 364,229,516.37/21,630.64
  6. Step 6: Final answer
    x = 16,838.59

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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.