Home / 20,786.41-31,319.95-17,169.67

Finding the Fourth Proportional to 20,786.41, 31,319.95 and 17,169.67

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Solution

The fourth proportional to 20,786.41, 31,319.95 and 17,169.67 is: 25,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.41 : 31,319.95 = 17,169.67 : x
  2. Step 2: Convert to fraction form
    20,786.41/31,319.95 = 17,169.67/x
  3. Step 3: Cross multiply
    20,786.41x = 31,319.95 × 17,169.67
  4. Step 4: Simplify right side
    20,786.41x = 537,753,205.92
  5. Step 5: Solve for x
    x = 537,753,205.92/20,786.41
  6. Step 6: Final answer
    x = 25,870.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.