Home / 12,942.57-17,854.48-7,634.31

Finding the Fourth Proportional to 12,942.57, 17,854.48 and 7,634.31

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Solution

The fourth proportional to 12,942.57, 17,854.48 and 7,634.31 is: 10,531.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.57 : 17,854.48 = 7,634.31 : x
  2. Step 2: Convert to fraction form
    12,942.57/17,854.48 = 7,634.31/x
  3. Step 3: Cross multiply
    12,942.57x = 17,854.48 × 7,634.31
  4. Step 4: Simplify right side
    12,942.57x = 136,306,635.21
  5. Step 5: Solve for x
    x = 136,306,635.21/12,942.57
  6. Step 6: Final answer
    x = 10,531.65

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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.