Home / 20,956.46-28,918.19-12,341.27

Finding the Fourth Proportional to 20,956.46, 28,918.19 and 12,341.27

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Solution

The fourth proportional to 20,956.46, 28,918.19 and 12,341.27 is: 17,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.46 : 28,918.19 = 12,341.27 : x
  2. Step 2: Convert to fraction form
    20,956.46/28,918.19 = 12,341.27/x
  3. Step 3: Cross multiply
    20,956.46x = 28,918.19 × 12,341.27
  4. Step 4: Simplify right side
    20,956.46x = 356,887,293.85
  5. Step 5: Solve for x
    x = 356,887,293.85/20,956.46
  6. Step 6: Final answer
    x = 17,029.95

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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.