Home / 20,613.21-30,871.68-15,052.76

Finding the Fourth Proportional to 20,613.21, 30,871.68 and 15,052.76

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Solution

The fourth proportional to 20,613.21, 30,871.68 and 15,052.76 is: 22,543.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.21 : 30,871.68 = 15,052.76 : x
  2. Step 2: Convert to fraction form
    20,613.21/30,871.68 = 15,052.76/x
  3. Step 3: Cross multiply
    20,613.21x = 30,871.68 × 15,052.76
  4. Step 4: Simplify right side
    20,613.21x = 464,703,989.84
  5. Step 5: Solve for x
    x = 464,703,989.84/20,613.21
  6. Step 6: Final answer
    x = 22,543.99

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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.