Home / 20,580.52-28,400.92-11,627.88

Finding the Fourth Proportional to 20,580.52, 28,400.92 and 11,627.88

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Solution

The fourth proportional to 20,580.52, 28,400.92 and 11,627.88 is: 16,046.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.52 : 28,400.92 = 11,627.88 : x
  2. Step 2: Convert to fraction form
    20,580.52/28,400.92 = 11,627.88/x
  3. Step 3: Cross multiply
    20,580.52x = 28,400.92 × 11,627.88
  4. Step 4: Simplify right side
    20,580.52x = 330,242,489.65
  5. Step 5: Solve for x
    x = 330,242,489.65/20,580.52
  6. Step 6: Final answer
    x = 16,046.36

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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.