Home / 12,684.87-17,512.16-7,650.36

Finding the Fourth Proportional to 12,684.87, 17,512.16 and 7,650.36

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Solution

The fourth proportional to 12,684.87, 17,512.16 and 7,650.36 is: 10,561.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.87 : 17,512.16 = 7,650.36 : x
  2. Step 2: Convert to fraction form
    12,684.87/17,512.16 = 7,650.36/x
  3. Step 3: Cross multiply
    12,684.87x = 17,512.16 × 7,650.36
  4. Step 4: Simplify right side
    12,684.87x = 133,974,290.13
  5. Step 5: Solve for x
    x = 133,974,290.13/12,684.87
  6. Step 6: Final answer
    x = 10,561.74

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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.