Home / 12,625.26-17,406.66-8,639.52

Finding the Fourth Proportional to 12,625.26, 17,406.66 and 8,639.52

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Solution

The fourth proportional to 12,625.26, 17,406.66 and 8,639.52 is: 11,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.26 : 17,406.66 = 8,639.52 : x
  2. Step 2: Convert to fraction form
    12,625.26/17,406.66 = 8,639.52/x
  3. Step 3: Cross multiply
    12,625.26x = 17,406.66 × 8,639.52
  4. Step 4: Simplify right side
    12,625.26x = 150,385,187.20
  5. Step 5: Solve for x
    x = 150,385,187.20/12,625.26
  6. Step 6: Final answer
    x = 11,911.45

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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.