Home / 20,360.58-28,099.41-11,408.03

Finding the Fourth Proportional to 20,360.58, 28,099.41 and 11,408.03

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Solution

The fourth proportional to 20,360.58, 28,099.41 and 11,408.03 is: 15,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.58 : 28,099.41 = 11,408.03 : x
  2. Step 2: Convert to fraction form
    20,360.58/28,099.41 = 11,408.03/x
  3. Step 3: Cross multiply
    20,360.58x = 28,099.41 × 11,408.03
  4. Step 4: Simplify right side
    20,360.58x = 320,558,771.77
  5. Step 5: Solve for x
    x = 320,558,771.77/20,360.58
  6. Step 6: Final answer
    x = 15,744.09

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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.