Home / 20,215.30-30,322.95-17,007.70

Finding the Fourth Proportional to 20,215.30, 30,322.95 and 17,007.70

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Solution

The fourth proportional to 20,215.30, 30,322.95 and 17,007.70 is: 25,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.30 : 30,322.95 = 17,007.70 : x
  2. Step 2: Convert to fraction form
    20,215.30/30,322.95 = 17,007.70/x
  3. Step 3: Cross multiply
    20,215.30x = 30,322.95 × 17,007.70
  4. Step 4: Simplify right side
    20,215.30x = 515,723,636.72
  5. Step 5: Solve for x
    x = 515,723,636.72/20,215.30
  6. Step 6: Final answer
    x = 25,511.55

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Similar ratio
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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.