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Finding the Fourth Proportional to 12,888.27, 17,785.31 and 7,299.27

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Solution

The fourth proportional to 12,888.27, 17,785.31 and 7,299.27 is: 10,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.27 : 17,785.31 = 7,299.27 : x
  2. Step 2: Convert to fraction form
    12,888.27/17,785.31 = 7,299.27/x
  3. Step 3: Cross multiply
    12,888.27x = 17,785.31 × 7,299.27
  4. Step 4: Simplify right side
    12,888.27x = 129,819,743.23
  5. Step 5: Solve for x
    x = 129,819,743.23/12,888.27
  6. Step 6: Final answer
    x = 10,072.71

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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.