Home / 20,832.16-28,748.34-11,400.88

Finding the Fourth Proportional to 20,832.16, 28,748.34 and 11,400.88

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Solution

The fourth proportional to 20,832.16, 28,748.34 and 11,400.88 is: 15,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.16 : 28,748.34 = 11,400.88 : x
  2. Step 2: Convert to fraction form
    20,832.16/28,748.34 = 11,400.88/x
  3. Step 3: Cross multiply
    20,832.16x = 28,748.34 × 11,400.88
  4. Step 4: Simplify right side
    20,832.16x = 327,756,374.54
  5. Step 5: Solve for x
    x = 327,756,374.54/20,832.16
  6. Step 6: Final answer
    x = 15,733.19

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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.