Home / 21,995.20-32,992.80-21,217.60

Finding the Fourth Proportional to 21,995.20, 32,992.80 and 21,217.60

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Solution

The fourth proportional to 21,995.20, 32,992.80 and 21,217.60 is: 31,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.20 : 32,992.80 = 21,217.60 : x
  2. Step 2: Convert to fraction form
    21,995.20/32,992.80 = 21,217.60/x
  3. Step 3: Cross multiply
    21,995.20x = 32,992.80 × 21,217.60
  4. Step 4: Simplify right side
    21,995.20x = 700,028,033.28
  5. Step 5: Solve for x
    x = 700,028,033.28/21,995.20
  6. Step 6: Final answer
    x = 31,826.40

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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.