Home / 12,122.39-16,729.13-7,087.04

Finding the Fourth Proportional to 12,122.39, 16,729.13 and 7,087.04

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Solution

The fourth proportional to 12,122.39, 16,729.13 and 7,087.04 is: 9,780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.39 : 16,729.13 = 7,087.04 : x
  2. Step 2: Convert to fraction form
    12,122.39/16,729.13 = 7,087.04/x
  3. Step 3: Cross multiply
    12,122.39x = 16,729.13 × 7,087.04
  4. Step 4: Simplify right side
    12,122.39x = 118,560,013.48
  5. Step 5: Solve for x
    x = 118,560,013.48/12,122.39
  6. Step 6: Final answer
    x = 9,780.25

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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.