Home / 20,794.05-31,129.65-13,376.61

Finding the Fourth Proportional to 20,794.05, 31,129.65 and 13,376.61

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Solution

The fourth proportional to 20,794.05, 31,129.65 and 13,376.61 is: 20,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.05 : 31,129.65 = 13,376.61 : x
  2. Step 2: Convert to fraction form
    20,794.05/31,129.65 = 13,376.61/x
  3. Step 3: Cross multiply
    20,794.05x = 31,129.65 × 13,376.61
  4. Step 4: Simplify right side
    20,794.05x = 416,409,187.49
  5. Step 5: Solve for x
    x = 416,409,187.49/20,794.05
  6. Step 6: Final answer
    x = 20,025.40

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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.