Home / 20,832.28-28,748.64-11,400.82

Finding the Fourth Proportional to 20,832.28, 28,748.64 and 11,400.82

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Solution

The fourth proportional to 20,832.28, 28,748.64 and 11,400.82 is: 15,733.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.28 : 28,748.64 = 11,400.82 : x
  2. Step 2: Convert to fraction form
    20,832.28/28,748.64 = 11,400.82/x
  3. Step 3: Cross multiply
    20,832.28x = 28,748.64 × 11,400.82
  4. Step 4: Simplify right side
    20,832.28x = 327,758,069.88
  5. Step 5: Solve for x
    x = 327,758,069.88/20,832.28
  6. Step 6: Final answer
    x = 15,733.18

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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.