Home / 20,826.88-28,741.68-11,396.08

Finding the Fourth Proportional to 20,826.88, 28,741.68 and 11,396.08

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Solution

The fourth proportional to 20,826.88, 28,741.68 and 11,396.08 is: 15,726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.88 : 28,741.68 = 11,396.08 : x
  2. Step 2: Convert to fraction form
    20,826.88/28,741.68 = 11,396.08/x
  3. Step 3: Cross multiply
    20,826.88x = 28,741.68 × 11,396.08
  4. Step 4: Simplify right side
    20,826.88x = 327,542,484.61
  5. Step 5: Solve for x
    x = 327,542,484.61/20,826.88
  6. Step 6: Final answer
    x = 15,726.91

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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.