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Finding the Fourth Proportional to 21,671.53, 32,515.92 and 8,340.95

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Solution

The fourth proportional to 21,671.53, 32,515.92 and 8,340.95 is: 12,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.53 : 32,515.92 = 8,340.95 : x
  2. Step 2: Convert to fraction form
    21,671.53/32,515.92 = 8,340.95/x
  3. Step 3: Cross multiply
    21,671.53x = 32,515.92 × 8,340.95
  4. Step 4: Simplify right side
    21,671.53x = 271,213,662.92
  5. Step 5: Solve for x
    x = 271,213,662.92/21,671.53
  6. Step 6: Final answer
    x = 12,514.74

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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.