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Finding the Fourth Proportional to 12,711.94, 17,542.51 and 7,743.94

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Solution

The fourth proportional to 12,711.94, 17,542.51 and 7,743.94 is: 10,686.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.94 : 17,542.51 = 7,743.94 : x
  2. Step 2: Convert to fraction form
    12,711.94/17,542.51 = 7,743.94/x
  3. Step 3: Cross multiply
    12,711.94x = 17,542.51 × 7,743.94
  4. Step 4: Simplify right side
    12,711.94x = 135,848,081.67
  5. Step 5: Solve for x
    x = 135,848,081.67/12,711.94
  6. Step 6: Final answer
    x = 10,686.65

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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.