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Finding the Fourth Proportional to 21,594.92, 29,799.84 and 12,162.88

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Solution

The fourth proportional to 21,594.92, 29,799.84 and 12,162.88 is: 16,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,594.92 : 29,799.84 = 12,162.88 : x
  2. Step 2: Convert to fraction form
    21,594.92/29,799.84 = 12,162.88/x
  3. Step 3: Cross multiply
    21,594.92x = 29,799.84 × 12,162.88
  4. Step 4: Simplify right side
    21,594.92x = 362,451,877.94
  5. Step 5: Solve for x
    x = 362,451,877.94/21,594.92
  6. Step 6: Final answer
    x = 16,784.13

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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.