Home / 20,832.06-28,748.26-11,400.64

Finding the Fourth Proportional to 20,832.06, 28,748.26 and 11,400.64

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Solution

The fourth proportional to 20,832.06, 28,748.26 and 11,400.64 is: 15,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.06 : 28,748.26 = 11,400.64 : x
  2. Step 2: Convert to fraction form
    20,832.06/28,748.26 = 11,400.64/x
  3. Step 3: Cross multiply
    20,832.06x = 28,748.26 × 11,400.64
  4. Step 4: Simplify right side
    20,832.06x = 327,748,562.89
  5. Step 5: Solve for x
    x = 327,748,562.89/20,832.06
  6. Step 6: Final answer
    x = 15,732.89

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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.