Home / 20,332.34-30,480.96-7,861.10

Finding the Fourth Proportional to 20,332.34, 30,480.96 and 7,861.10

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Solution

The fourth proportional to 20,332.34, 30,480.96 and 7,861.10 is: 11,784.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.34 : 30,480.96 = 7,861.10 : x
  2. Step 2: Convert to fraction form
    20,332.34/30,480.96 = 7,861.10/x
  3. Step 3: Cross multiply
    20,332.34x = 30,480.96 × 7,861.10
  4. Step 4: Simplify right side
    20,332.34x = 239,613,874.66
  5. Step 5: Solve for x
    x = 239,613,874.66/20,332.34
  6. Step 6: Final answer
    x = 11,784.86

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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.