Home / 12,440.88-17,170.65-7,137.45

Finding the Fourth Proportional to 12,440.88, 17,170.65 and 7,137.45

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Solution

The fourth proportional to 12,440.88, 17,170.65 and 7,137.45 is: 9,850.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.88 : 17,170.65 = 7,137.45 : x
  2. Step 2: Convert to fraction form
    12,440.88/17,170.65 = 7,137.45/x
  3. Step 3: Cross multiply
    12,440.88x = 17,170.65 × 7,137.45
  4. Step 4: Simplify right side
    12,440.88x = 122,554,655.84
  5. Step 5: Solve for x
    x = 122,554,655.84/12,440.88
  6. Step 6: Final answer
    x = 9,850.96

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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.