Home / 20,606.53-30,885.84-9,489.86

Finding the Fourth Proportional to 20,606.53, 30,885.84 and 9,489.86

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Solution

The fourth proportional to 20,606.53, 30,885.84 and 9,489.86 is: 14,223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.53 : 30,885.84 = 9,489.86 : x
  2. Step 2: Convert to fraction form
    20,606.53/30,885.84 = 9,489.86/x
  3. Step 3: Cross multiply
    20,606.53x = 30,885.84 × 9,489.86
  4. Step 4: Simplify right side
    20,606.53x = 293,102,285.67
  5. Step 5: Solve for x
    x = 293,102,285.67/20,606.53
  6. Step 6: Final answer
    x = 14,223.76

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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.