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Finding the Fourth Proportional to 21,910.60, 32,856.30 and 8,758.60

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Solution

The fourth proportional to 21,910.60, 32,856.30 and 8,758.60 is: 13,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.60 : 32,856.30 = 8,758.60 : x
  2. Step 2: Convert to fraction form
    21,910.60/32,856.30 = 8,758.60/x
  3. Step 3: Cross multiply
    21,910.60x = 32,856.30 × 8,758.60
  4. Step 4: Simplify right side
    21,910.60x = 287,775,189.18
  5. Step 5: Solve for x
    x = 287,775,189.18/21,910.60
  6. Step 6: Final answer
    x = 13,134.06

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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.