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Finding the Fourth Proportional to 20,330.68, 30,495.66 and 8,018.68

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Solution

The fourth proportional to 20,330.68, 30,495.66 and 8,018.68 is: 12,027.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.68 : 30,495.66 = 8,018.68 : x
  2. Step 2: Convert to fraction form
    20,330.68/30,495.66 = 8,018.68/x
  3. Step 3: Cross multiply
    20,330.68x = 30,495.66 × 8,018.68
  4. Step 4: Simplify right side
    20,330.68x = 244,534,938.93
  5. Step 5: Solve for x
    x = 244,534,938.93/20,330.68
  6. Step 6: Final answer
    x = 12,027.88

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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.