Home / 12,318.75-17,007.69-8,540.55

Finding the Fourth Proportional to 12,318.75, 17,007.69 and 8,540.55

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Solution

The fourth proportional to 12,318.75, 17,007.69 and 8,540.55 is: 11,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.75 : 17,007.69 = 8,540.55 : x
  2. Step 2: Convert to fraction form
    12,318.75/17,007.69 = 8,540.55/x
  3. Step 3: Cross multiply
    12,318.75x = 17,007.69 × 8,540.55
  4. Step 4: Simplify right side
    12,318.75x = 145,255,026.83
  5. Step 5: Solve for x
    x = 145,255,026.83/12,318.75
  6. Step 6: Final answer
    x = 11,791.38

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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.