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Finding the Fourth Proportional to 21,630.58, 29,848.98 and 12,198.58

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Solution

The fourth proportional to 21,630.58, 29,848.98 and 12,198.58 is: 16,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.58 : 29,848.98 = 12,198.58 : x
  2. Step 2: Convert to fraction form
    21,630.58/29,848.98 = 12,198.58/x
  3. Step 3: Cross multiply
    21,630.58x = 29,848.98 × 12,198.58
  4. Step 4: Simplify right side
    21,630.58x = 364,115,170.45
  5. Step 5: Solve for x
    x = 364,115,170.45/21,630.58
  6. Step 6: Final answer
    x = 16,833.35

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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.