Home / 20,604.20-28,429.83-13,051.76

Finding the Fourth Proportional to 20,604.20, 28,429.83 and 13,051.76

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Solution

The fourth proportional to 20,604.20, 28,429.83 and 13,051.76 is: 18,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.20 : 28,429.83 = 13,051.76 : x
  2. Step 2: Convert to fraction form
    20,604.20/28,429.83 = 13,051.76/x
  3. Step 3: Cross multiply
    20,604.20x = 28,429.83 × 13,051.76
  4. Step 4: Simplify right side
    20,604.20x = 371,059,175.85
  5. Step 5: Solve for x
    x = 371,059,175.85/20,604.20
  6. Step 6: Final answer
    x = 18,008.91

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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.