Home / 20,581.13-30,871.42-4,998.89

Finding the Fourth Proportional to 20,581.13, 30,871.42 and 4,998.89

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Solution

The fourth proportional to 20,581.13, 30,871.42 and 4,998.89 is: 7,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.13 : 30,871.42 = 4,998.89 : x
  2. Step 2: Convert to fraction form
    20,581.13/30,871.42 = 4,998.89/x
  3. Step 3: Cross multiply
    20,581.13x = 30,871.42 × 4,998.89
  4. Step 4: Simplify right side
    20,581.13x = 154,322,832.72
  5. Step 5: Solve for x
    x = 154,322,832.72/20,581.13
  6. Step 6: Final answer
    x = 7,498.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.