Home / 20,832.60-28,749.12-12,334.32

Finding the Fourth Proportional to 20,832.60, 28,749.12 and 12,334.32

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Solution

The fourth proportional to 20,832.60, 28,749.12 and 12,334.32 is: 17,021.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.60 : 28,749.12 = 12,334.32 : x
  2. Step 2: Convert to fraction form
    20,832.60/28,749.12 = 12,334.32/x
  3. Step 3: Cross multiply
    20,832.60x = 28,749.12 × 12,334.32
  4. Step 4: Simplify right side
    20,832.60x = 354,600,845.80
  5. Step 5: Solve for x
    x = 354,600,845.80/20,832.60
  6. Step 6: Final answer
    x = 17,021.44

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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.