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Finding the Fourth Proportional to 21,863.76, 32,743.32 and 12,601.68

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Solution

The fourth proportional to 21,863.76, 32,743.32 and 12,601.68 is: 18,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.76 : 32,743.32 = 12,601.68 : x
  2. Step 2: Convert to fraction form
    21,863.76/32,743.32 = 12,601.68/x
  3. Step 3: Cross multiply
    21,863.76x = 32,743.32 × 12,601.68
  4. Step 4: Simplify right side
    21,863.76x = 412,620,840.78
  5. Step 5: Solve for x
    x = 412,620,840.78/21,863.76
  6. Step 6: Final answer
    x = 18,872.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.