Home / 20,584.26-28,406.21-11,152.85

Finding the Fourth Proportional to 20,584.26, 28,406.21 and 11,152.85

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Solution

The fourth proportional to 20,584.26, 28,406.21 and 11,152.85 is: 15,390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.26 : 28,406.21 = 11,152.85 : x
  2. Step 2: Convert to fraction form
    20,584.26/28,406.21 = 11,152.85/x
  3. Step 3: Cross multiply
    20,584.26x = 28,406.21 × 11,152.85
  4. Step 4: Simplify right side
    20,584.26x = 316,810,001.40
  5. Step 5: Solve for x
    x = 316,810,001.40/20,584.26
  6. Step 6: Final answer
    x = 15,390.89

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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.