Home / 20,757.60-28,645.56-11,326.32

Finding the Fourth Proportional to 20,757.60, 28,645.56 and 11,326.32

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Solution

The fourth proportional to 20,757.60, 28,645.56 and 11,326.32 is: 15,630.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.60 : 28,645.56 = 11,326.32 : x
  2. Step 2: Convert to fraction form
    20,757.60/28,645.56 = 11,326.32/x
  3. Step 3: Cross multiply
    20,757.60x = 28,645.56 × 11,326.32
  4. Step 4: Simplify right side
    20,757.60x = 324,448,779.14
  5. Step 5: Solve for x
    x = 324,448,779.14/20,757.60
  6. Step 6: Final answer
    x = 15,630.36

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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.