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Finding the Fourth Proportional to 21,786.75, 32,675.96 and 8,459.75

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Solution

The fourth proportional to 21,786.75, 32,675.96 and 8,459.75 is: 12,688.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.75 : 32,675.96 = 8,459.75 : x
  2. Step 2: Convert to fraction form
    21,786.75/32,675.96 = 8,459.75/x
  3. Step 3: Cross multiply
    21,786.75x = 32,675.96 × 8,459.75
  4. Step 4: Simplify right side
    21,786.75x = 276,430,246.93
  5. Step 5: Solve for x
    x = 276,430,246.93/21,786.75
  6. Step 6: Final answer
    x = 12,688.00

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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.