Home / 20,360.92-28,097.58-11,408.80

Finding the Fourth Proportional to 20,360.92, 28,097.58 and 11,408.80

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Solution

The fourth proportional to 20,360.92, 28,097.58 and 11,408.80 is: 15,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.92 : 28,097.58 = 11,408.80 : x
  2. Step 2: Convert to fraction form
    20,360.92/28,097.58 = 11,408.80/x
  3. Step 3: Cross multiply
    20,360.92x = 28,097.58 × 11,408.80
  4. Step 4: Simplify right side
    20,360.92x = 320,559,670.70
  5. Step 5: Solve for x
    x = 320,559,670.70/20,360.92
  6. Step 6: Final answer
    x = 15,743.87

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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.