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Finding the Fourth Proportional to 12,427.79, 17,147.99 and 7,393.29

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Solution

The fourth proportional to 12,427.79, 17,147.99 and 7,393.29 is: 10,201.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.79 : 17,147.99 = 7,393.29 : x
  2. Step 2: Convert to fraction form
    12,427.79/17,147.99 = 7,393.29/x
  3. Step 3: Cross multiply
    12,427.79x = 17,147.99 × 7,393.29
  4. Step 4: Simplify right side
    12,427.79x = 126,780,062.99
  5. Step 5: Solve for x
    x = 126,780,062.99/12,427.79
  6. Step 6: Final answer
    x = 10,201.34

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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.