Home / 21,636.12-32,439.14-8,489.80

Finding the Fourth Proportional to 21,636.12, 32,439.14 and 8,489.80

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Solution

The fourth proportional to 21,636.12, 32,439.14 and 8,489.80 is: 12,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.12 : 32,439.14 = 8,489.80 : x
  2. Step 2: Convert to fraction form
    21,636.12/32,439.14 = 8,489.80/x
  3. Step 3: Cross multiply
    21,636.12x = 32,439.14 × 8,489.80
  4. Step 4: Simplify right side
    21,636.12x = 275,401,810.77
  5. Step 5: Solve for x
    x = 275,401,810.77/21,636.12
  6. Step 6: Final answer
    x = 12,728.80

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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.