Home / 21,612.45-32,405.72-8,449.14

Finding the Fourth Proportional to 21,612.45, 32,405.72 and 8,449.14

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Solution

The fourth proportional to 21,612.45, 32,405.72 and 8,449.14 is: 12,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.45 : 32,405.72 = 8,449.14 : x
  2. Step 2: Convert to fraction form
    21,612.45/32,405.72 = 8,449.14/x
  3. Step 3: Cross multiply
    21,612.45x = 32,405.72 × 8,449.14
  4. Step 4: Simplify right side
    21,612.45x = 273,800,422.84
  5. Step 5: Solve for x
    x = 273,800,422.84/21,612.45
  6. Step 6: Final answer
    x = 12,668.64

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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.