Home / 20,281.20-27,992.76-13,195.32

Finding the Fourth Proportional to 20,281.20, 27,992.76 and 13,195.32

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Solution

The fourth proportional to 20,281.20, 27,992.76 and 13,195.32 is: 18,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.20 : 27,992.76 = 13,195.32 : x
  2. Step 2: Convert to fraction form
    20,281.20/27,992.76 = 13,195.32/x
  3. Step 3: Cross multiply
    20,281.20x = 27,992.76 × 13,195.32
  4. Step 4: Simplify right side
    20,281.20x = 369,373,425.88
  5. Step 5: Solve for x
    x = 369,373,425.88/20,281.20
  6. Step 6: Final answer
    x = 18,212.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.