Home / 20,935.81-28,891.92-11,504.62

Finding the Fourth Proportional to 20,935.81, 28,891.92 and 11,504.62

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Solution

The fourth proportional to 20,935.81, 28,891.92 and 11,504.62 is: 15,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.81 : 28,891.92 = 11,504.62 : x
  2. Step 2: Convert to fraction form
    20,935.81/28,891.92 = 11,504.62/x
  3. Step 3: Cross multiply
    20,935.81x = 28,891.92 × 11,504.62
  4. Step 4: Simplify right side
    20,935.81x = 332,390,560.67
  5. Step 5: Solve for x
    x = 332,390,560.67/20,935.81
  6. Step 6: Final answer
    x = 15,876.65

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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.