Home / 21,836.20-32,827.20-18,628.60

Finding the Fourth Proportional to 21,836.20, 32,827.20 and 18,628.60

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Solution

The fourth proportional to 21,836.20, 32,827.20 and 18,628.60 is: 28,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.20 : 32,827.20 = 18,628.60 : x
  2. Step 2: Convert to fraction form
    21,836.20/32,827.20 = 18,628.60/x
  3. Step 3: Cross multiply
    21,836.20x = 32,827.20 × 18,628.60
  4. Step 4: Simplify right side
    21,836.20x = 611,524,777.92
  5. Step 5: Solve for x
    x = 611,524,777.92/21,836.20
  6. Step 6: Final answer
    x = 28,005.09

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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.