Home / 20,730.06-28,608.26-11,779.08

Finding the Fourth Proportional to 20,730.06, 28,608.26 and 11,779.08

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Solution

The fourth proportional to 20,730.06, 28,608.26 and 11,779.08 is: 16,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.06 : 28,608.26 = 11,779.08 : x
  2. Step 2: Convert to fraction form
    20,730.06/28,608.26 = 11,779.08/x
  3. Step 3: Cross multiply
    20,730.06x = 28,608.26 × 11,779.08
  4. Step 4: Simplify right side
    20,730.06x = 336,978,924.31
  5. Step 5: Solve for x
    x = 336,978,924.31/20,730.06
  6. Step 6: Final answer
    x = 16,255.57

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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.