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Finding the Fourth Proportional to 21,671.41, 32,498.91 and 8,516.59

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Solution

The fourth proportional to 21,671.41, 32,498.91 and 8,516.59 is: 12,771.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.41 : 32,498.91 = 8,516.59 : x
  2. Step 2: Convert to fraction form
    21,671.41/32,498.91 = 8,516.59/x
  3. Step 3: Cross multiply
    21,671.41x = 32,498.91 × 8,516.59
  4. Step 4: Simplify right side
    21,671.41x = 276,779,891.92
  5. Step 5: Solve for x
    x = 276,779,891.92/21,671.41
  6. Step 6: Final answer
    x = 12,771.66

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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.