Home / 20,457.03-30,697.38-8,609.88

Finding the Fourth Proportional to 20,457.03, 30,697.38 and 8,609.88

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Solution

The fourth proportional to 20,457.03, 30,697.38 and 8,609.88 is: 12,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.03 : 30,697.38 = 8,609.88 : x
  2. Step 2: Convert to fraction form
    20,457.03/30,697.38 = 8,609.88/x
  3. Step 3: Cross multiply
    20,457.03x = 30,697.38 × 8,609.88
  4. Step 4: Simplify right side
    20,457.03x = 264,300,758.11
  5. Step 5: Solve for x
    x = 264,300,758.11/20,457.03
  6. Step 6: Final answer
    x = 12,919.80

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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.