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Finding the Fourth Proportional to 12,391.90, 17,093.04 and 7,352.56

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Solution

The fourth proportional to 12,391.90, 17,093.04 and 7,352.56 is: 10,141.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.90 : 17,093.04 = 7,352.56 : x
  2. Step 2: Convert to fraction form
    12,391.90/17,093.04 = 7,352.56/x
  3. Step 3: Cross multiply
    12,391.90x = 17,093.04 × 7,352.56
  4. Step 4: Simplify right side
    12,391.90x = 125,677,602.18
  5. Step 5: Solve for x
    x = 125,677,602.18/12,391.90
  6. Step 6: Final answer
    x = 10,141.92

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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.