Home / 20,730.06-28,608.25-11,779.09

Finding the Fourth Proportional to 20,730.06, 28,608.25 and 11,779.09

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Solution

The fourth proportional to 20,730.06, 28,608.25 and 11,779.09 is: 16,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.06 : 28,608.25 = 11,779.09 : x
  2. Step 2: Convert to fraction form
    20,730.06/28,608.25 = 11,779.09/x
  3. Step 3: Cross multiply
    20,730.06x = 28,608.25 × 11,779.09
  4. Step 4: Simplify right side
    20,730.06x = 336,979,050.52
  5. Step 5: Solve for x
    x = 336,979,050.52/20,730.06
  6. Step 6: Final answer
    x = 16,255.58

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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.