Home / 20,479.72-28,262.22-11,527.24

Finding the Fourth Proportional to 20,479.72, 28,262.22 and 11,527.24

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Solution

The fourth proportional to 20,479.72, 28,262.22 and 11,527.24 is: 15,907.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.72 : 28,262.22 = 11,527.24 : x
  2. Step 2: Convert to fraction form
    20,479.72/28,262.22 = 11,527.24/x
  3. Step 3: Cross multiply
    20,479.72x = 28,262.22 × 11,527.24
  4. Step 4: Simplify right side
    20,479.72x = 325,785,392.87
  5. Step 5: Solve for x
    x = 325,785,392.87/20,479.72
  6. Step 6: Final answer
    x = 15,907.71

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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.