Home / 21,856.26-32,784.39-8,708.76

Finding the Fourth Proportional to 21,856.26, 32,784.39 and 8,708.76

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Solution

The fourth proportional to 21,856.26, 32,784.39 and 8,708.76 is: 13,063.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.26 : 32,784.39 = 8,708.76 : x
  2. Step 2: Convert to fraction form
    21,856.26/32,784.39 = 8,708.76/x
  3. Step 3: Cross multiply
    21,856.26x = 32,784.39 × 8,708.76
  4. Step 4: Simplify right side
    21,856.26x = 285,511,384.26
  5. Step 5: Solve for x
    x = 285,511,384.26/21,856.26
  6. Step 6: Final answer
    x = 13,063.14

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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.