Home / 20,836.11-28,730.91-13,273.95

Finding the Fourth Proportional to 20,836.11, 28,730.91 and 13,273.95

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Solution

The fourth proportional to 20,836.11, 28,730.91 and 13,273.95 is: 18,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.11 : 28,730.91 = 13,273.95 : x
  2. Step 2: Convert to fraction form
    20,836.11/28,730.91 = 13,273.95/x
  3. Step 3: Cross multiply
    20,836.11x = 28,730.91 × 13,273.95
  4. Step 4: Simplify right side
    20,836.11x = 381,372,662.79
  5. Step 5: Solve for x
    x = 381,372,662.79/20,836.11
  6. Step 6: Final answer
    x = 18,303.45

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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.