Home / 20,832.01-28,748.18-11,400.57

Finding the Fourth Proportional to 20,832.01, 28,748.18 and 11,400.57

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Solution

The fourth proportional to 20,832.01, 28,748.18 and 11,400.57 is: 15,732.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.01 : 28,748.18 = 11,400.57 : x
  2. Step 2: Convert to fraction form
    20,832.01/28,748.18 = 11,400.57/x
  3. Step 3: Cross multiply
    20,832.01x = 28,748.18 × 11,400.57
  4. Step 4: Simplify right side
    20,832.01x = 327,745,666.96
  5. Step 5: Solve for x
    x = 327,745,666.96/20,832.01
  6. Step 6: Final answer
    x = 15,732.79

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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.