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Finding the Fourth Proportional to 21,863.61, 32,766.39 and 8,708.76

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Solution

The fourth proportional to 21,863.61, 32,766.39 and 8,708.76 is: 13,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.61 : 32,766.39 = 8,708.76 : x
  2. Step 2: Convert to fraction form
    21,863.61/32,766.39 = 8,708.76/x
  3. Step 3: Cross multiply
    21,863.61x = 32,766.39 × 8,708.76
  4. Step 4: Simplify right side
    21,863.61x = 285,354,626.58
  5. Step 5: Solve for x
    x = 285,354,626.58/21,863.61
  6. Step 6: Final answer
    x = 13,051.58

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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.