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Finding the Fourth Proportional to 12,734.48, 17,573.64 and 7,145.48

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Solution

The fourth proportional to 12,734.48, 17,573.64 and 7,145.48 is: 9,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,734.48 : 17,573.64 = 7,145.48 : x
  2. Step 2: Convert to fraction form
    12,734.48/17,573.64 = 7,145.48/x
  3. Step 3: Cross multiply
    12,734.48x = 17,573.64 × 7,145.48
  4. Step 4: Simplify right side
    12,734.48x = 125,572,093.15
  5. Step 5: Solve for x
    x = 125,572,093.15/12,734.48
  6. Step 6: Final answer
    x = 9,860.79

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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.