Home / 20,586.76-28,408.02-11,633.80

Finding the Fourth Proportional to 20,586.76, 28,408.02 and 11,633.80

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Solution

The fourth proportional to 20,586.76, 28,408.02 and 11,633.80 is: 16,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.76 : 28,408.02 = 11,633.80 : x
  2. Step 2: Convert to fraction form
    20,586.76/28,408.02 = 11,633.80/x
  3. Step 3: Cross multiply
    20,586.76x = 28,408.02 × 11,633.80
  4. Step 4: Simplify right side
    20,586.76x = 330,493,223.08
  5. Step 5: Solve for x
    x = 330,493,223.08/20,586.76
  6. Step 6: Final answer
    x = 16,053.68

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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.