Home / 20,446.65-28,219.37-11,494.89

Finding the Fourth Proportional to 20,446.65, 28,219.37 and 11,494.89

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Solution

The fourth proportional to 20,446.65, 28,219.37 and 11,494.89 is: 15,864.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.65 : 28,219.37 = 11,494.89 : x
  2. Step 2: Convert to fraction form
    20,446.65/28,219.37 = 11,494.89/x
  3. Step 3: Cross multiply
    20,446.65x = 28,219.37 × 11,494.89
  4. Step 4: Simplify right side
    20,446.65x = 324,378,496.54
  5. Step 5: Solve for x
    x = 324,378,496.54/20,446.65
  6. Step 6: Final answer
    x = 15,864.63

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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.