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Finding the Fourth Proportional to 13,361.54, 20,057.83 and 7,818.86

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Solution

The fourth proportional to 13,361.54, 20,057.83 and 7,818.86 is: 11,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.54 : 20,057.83 = 7,818.86 : x
  2. Step 2: Convert to fraction form
    13,361.54/20,057.83 = 7,818.86/x
  3. Step 3: Cross multiply
    13,361.54x = 20,057.83 × 7,818.86
  4. Step 4: Simplify right side
    13,361.54x = 156,829,364.67
  5. Step 5: Solve for x
    x = 156,829,364.67/13,361.54
  6. Step 6: Final answer
    x = 11,737.37

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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.