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Finding the Fourth Proportional to 13,704.77, 18,911.52 and 7,737.02

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Solution

The fourth proportional to 13,704.77, 18,911.52 and 7,737.02 is: 10,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.77 : 18,911.52 = 7,737.02 : x
  2. Step 2: Convert to fraction form
    13,704.77/18,911.52 = 7,737.02/x
  3. Step 3: Cross multiply
    13,704.77x = 18,911.52 × 7,737.02
  4. Step 4: Simplify right side
    13,704.77x = 146,318,855.75
  5. Step 5: Solve for x
    x = 146,318,855.75/13,704.77
  6. Step 6: Final answer
    x = 10,676.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.