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Finding the Fourth Proportional to 12,908.73, 17,811.93 and 7,602.83

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Solution

The fourth proportional to 12,908.73, 17,811.93 and 7,602.83 is: 10,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.73 : 17,811.93 = 7,602.83 : x
  2. Step 2: Convert to fraction form
    12,908.73/17,811.93 = 7,602.83/x
  3. Step 3: Cross multiply
    12,908.73x = 17,811.93 × 7,602.83
  4. Step 4: Simplify right side
    12,908.73x = 135,420,986.70
  5. Step 5: Solve for x
    x = 135,420,986.70/12,908.73
  6. Step 6: Final answer
    x = 10,490.65

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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.