Home / 20,811.52-28,752.24-17,449.12

Finding the Fourth Proportional to 20,811.52, 28,752.24 and 17,449.12

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Solution

The fourth proportional to 20,811.52, 28,752.24 and 17,449.12 is: 24,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.52 : 28,752.24 = 17,449.12 : x
  2. Step 2: Convert to fraction form
    20,811.52/28,752.24 = 17,449.12/x
  3. Step 3: Cross multiply
    20,811.52x = 28,752.24 × 17,449.12
  4. Step 4: Simplify right side
    20,811.52x = 501,701,286.03
  5. Step 5: Solve for x
    x = 501,701,286.03/20,811.52
  6. Step 6: Final answer
    x = 24,106.90

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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.