Home / 20,309.83-28,027.77-11,357.82

Finding the Fourth Proportional to 20,309.83, 28,027.77 and 11,357.82

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Solution

The fourth proportional to 20,309.83, 28,027.77 and 11,357.82 is: 15,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.83 : 28,027.77 = 11,357.82 : x
  2. Step 2: Convert to fraction form
    20,309.83/28,027.77 = 11,357.82/x
  3. Step 3: Cross multiply
    20,309.83x = 28,027.77 × 11,357.82
  4. Step 4: Simplify right side
    20,309.83x = 318,334,387.96
  5. Step 5: Solve for x
    x = 318,334,387.96/20,309.83
  6. Step 6: Final answer
    x = 15,673.91

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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.