Home / 20,586.29-28,408.35-11,633.60

Finding the Fourth Proportional to 20,586.29, 28,408.35 and 11,633.60

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Solution

The fourth proportional to 20,586.29, 28,408.35 and 11,633.60 is: 16,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.29 : 28,408.35 = 11,633.60 : x
  2. Step 2: Convert to fraction form
    20,586.29/28,408.35 = 11,633.60/x
  3. Step 3: Cross multiply
    20,586.29x = 28,408.35 × 11,633.60
  4. Step 4: Simplify right side
    20,586.29x = 330,491,317.15
  5. Step 5: Solve for x
    x = 330,491,317.15/20,586.29
  6. Step 6: Final answer
    x = 16,053.95

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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.