Home / 20,717.46-28,590.23-11,286.02

Finding the Fourth Proportional to 20,717.46, 28,590.23 and 11,286.02

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Solution

The fourth proportional to 20,717.46, 28,590.23 and 11,286.02 is: 15,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.46 : 28,590.23 = 11,286.02 : x
  2. Step 2: Convert to fraction form
    20,717.46/28,590.23 = 11,286.02/x
  3. Step 3: Cross multiply
    20,717.46x = 28,590.23 × 11,286.02
  4. Step 4: Simplify right side
    20,717.46x = 322,669,907.58
  5. Step 5: Solve for x
    x = 322,669,907.58/20,717.46
  6. Step 6: Final answer
    x = 15,574.78

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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.