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Finding the Fourth Proportional to 12,737.67, 19,107.72 and 4,947.09

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Solution

The fourth proportional to 12,737.67, 19,107.72 and 4,947.09 is: 7,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,737.67 : 19,107.72 = 4,947.09 : x
  2. Step 2: Convert to fraction form
    12,737.67/19,107.72 = 4,947.09/x
  3. Step 3: Cross multiply
    12,737.67x = 19,107.72 × 4,947.09
  4. Step 4: Simplify right side
    12,737.67x = 94,527,610.53
  5. Step 5: Solve for x
    x = 94,527,610.53/12,737.67
  6. Step 6: Final answer
    x = 7,421.11

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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.