Home / 20,764.26-28,651.30-12,265.21

Finding the Fourth Proportional to 20,764.26, 28,651.30 and 12,265.21

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Solution

The fourth proportional to 20,764.26, 28,651.30 and 12,265.21 is: 16,923.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.26 : 28,651.30 = 12,265.21 : x
  2. Step 2: Convert to fraction form
    20,764.26/28,651.30 = 12,265.21/x
  3. Step 3: Cross multiply
    20,764.26x = 28,651.30 × 12,265.21
  4. Step 4: Simplify right side
    20,764.26x = 351,414,068.02
  5. Step 5: Solve for x
    x = 351,414,068.02/20,764.26
  6. Step 6: Final answer
    x = 16,923.99

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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.